Cost Accounting Quiz: Cost Behavior And Relevant Range
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Cost Behavior And Relevant RangeQuestion 1 of 20

A manager is analyzing a curvilinear cost. Within a very narrow range of activity, this cost can be reasonably approximated by a straight line. The concept that justifies this linear approximation for budgeting and decision-making is known as the:

Matching principle.
Contribution margin concept.
Relevant range assumption.
Cost-benefit constraint.
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Cost Accounting Quiz

Cost Accounting Quiz: Cost Behavior And Relevant Range

Practice Cost Behavior And Relevant Range in Cost Accounting with focused quiz questions that help you check what you know, review explanations, and build confidence with test-style prompts.

What this quiz covers

This quiz focuses on Cost Behavior And Relevant Range, giving you a quick way to practice the rules, question types, and explanations that matter most for Cost Accounting.

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Try each quiz question before looking at the correct answer. Use the explanations to review missed ideas, then come back to similar questions until the pattern feels familiar.

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Question 1

A manager is analyzing a curvilinear cost. Within a very narrow range of activity, this cost can be reasonably approximated by a straight line. The concept that justifies this linear approximation for budgeting and decision-making is known as the:

  1. Matching principle.
  2. Contribution margin concept.
  3. Relevant range assumption. (correct answer)
  4. Cost-benefit constraint.
Explanation: Curvilinear costs are costs that do not have a constant relationship with activity levels; their graph is a curve, not a straight line. However, for practical purposes in accounting, we often assume a linear cost relationship. The relevant range assumption states that within a specific band of activity, the complex, true cost behavior can be reasonably approximated by a straight line. This simplifies analysis without sacrificing significant accuracy, as long as the company operates within that range.

Question 2

At an activity level of 20,000 units, a company's total manufacturing costs are $350,000. At 30,000 units, the total manufacturing costs are $450,000. However, the company's fixed costs only remain constant up to 25,000 units, at which point they increase by a fixed amount.

Assuming the variable cost per unit is constant across all activity levels shown, what is the amount of the increase in total fixed costs at the 25,000-unit threshold?

  1. $50,000 (correct answer)
  2. $100,000
  3. $25,000
  4. $10,000
Explanation: Let FC1 = fixed costs up to 25,000 units, FC2 = fixed costs above 25,000 units, V = variable cost per unit, and I = increase in fixed costs. We have two equations: (1) $350,000 = FC1 + V(20,000) and (2) $450,000 = FC2 + V(30,000). Since FC2 = FC1 + I, equation (2) becomes $450,000 = (FC1 + I) + V(30,000). The total cost increase of $100,000 from 20,000 to 30,000 units equals the variable cost increase plus the fixed cost step-up: $100,000 = V(10,000) + I. Testing answer choice A: if I = $50,000, then V = $5. Checking: FC1 = $350,000 - $5(20,000) = $250,000. For 30,000 units: $250,000 + $50,000 + $5(30,000) = $450,000 ✓

Question 3

A call center's monthly cost is described by the equation Y = $25,000 + $0.50X, where X is the number of calls handled. This formula is considered reliable for a call volume between 80,000 and 120,000 calls. The $25,000 includes $15,000 in committed fixed costs (e.g., facility rent) and $10,000 in discretionary fixed costs (e.g., training programs).

If management expects a severe economic downturn and projects call volume to drop to 60,000 calls per month for the next year, which component of the cost structure is most likely to change?

  1. The variable rate of $0.50 per call will increase due to lower volume.
  2. The committed fixed costs will decrease to better align with the lower activity.
  3. The discretionary fixed costs may be reduced by management to save money. (correct answer)
  4. The entire cost formula remains valid as the drop is a short-term projection.
Explanation: The projected volume of 60,000 calls is outside the established relevant range (80k-120k). This means the cost structure may change. The question asks which component is most likely to change. Discretionary fixed costs, such as training, advertising, and research, are set by annual management decisions and can be altered in the short term. In a downturn, these are often the first costs to be cut. Committed fixed costs (like long-term leases) are difficult to change in the short term. The variable rate is less likely to change than management's decision on discretionary spending. The cost formula is explicitly not valid outside the relevant range.

Question 4

A delivery company's total fuel cost is $22,000 at 50,000 miles driven and $28,000 at 70,000 miles driven. Total truck maintenance cost is $15,000 at 50,000 miles and $15,000 at 70,000 miles. These relationships are valid for a relevant range of 40,000 to 80,000 miles per month.

Based on this data, what are the classifications of the fuel and maintenance costs?

  1. Fuel is a variable cost; Maintenance is a fixed cost.
  2. Fuel is a mixed cost; Maintenance is a fixed cost. (correct answer)
  3. Fuel is a variable cost; Maintenance is a mixed cost.
  4. Fuel is a mixed cost; Maintenance is a discretionary fixed cost.
Explanation: First, analyze maintenance cost. Since the total cost remains $15,000 at two different activity levels, it behaves as a fixed cost. Next, analyze fuel cost. It changes with activity, so it is not purely fixed. To determine if it is variable or mixed, we test if the total cost is directly proportional to activity. The change in cost is $28,000 - $22,000 = $6,000. The change in activity is 70,000 - 50,000 = 20,000 miles. The variable rate is $6,000 / 20,000 = $0.30 per mile. We can then calculate the fixed component: $22,000 (total cost) - $15,000 (variable cost @ 50k miles) = $7,000. Since there is a non-zero fixed component, the fuel cost is a mixed cost.

Question 5

A company is automating a production process, which will increase annual fixed costs for depreciation by $200,000 and decrease variable labor costs from $15 per unit to $10 per unit. The current relevant range is 50,000 to 90,000 units. How will this automation project affect the company's operating leverage and the upper bound of its relevant range?

  1. Operating leverage will decrease; the relevant range's upper bound will likely decrease.
  2. Operating leverage will increase; the relevant range's upper bound is unaffected by this change.
  3. Operating leverage will decrease; the relevant range's upper bound will likely increase.
  4. Operating leverage will increase; the relevant range's upper bound will likely increase. (correct answer)
Explanation: Operating leverage is the proportion of fixed costs in a company's cost structure. By increasing fixed costs and decreasing variable costs, the company is increasing its operating leverage. This makes profits more sensitive to changes in sales. Automation typically increases a factory's potential output or capacity. Therefore, the upper bound of the relevant range (the range of normal, efficient operation) is likely to increase because the new machinery can support higher production levels. Distractor A gets both effects wrong. Distractor C incorrectly states leverage will decrease. Distractor D incorrectly assumes the relevant range is static and unrelated to production capacity.

Question 6

At 100% of its normal capacity, a company operates within a relevant range where its cost per unit is $12, composed of $8 in variable costs and $4 in fixed costs. The company is considering accepting a special order that would require it to operate at 110% of normal capacity.

Which of the following cost behaviors is most likely to be observed by operating at 110% of capacity?

  1. Total fixed costs will remain constant, but variable costs per unit will increase.
  2. The total cost per unit will decrease from $12 due to higher volume.
  3. Total fixed costs will increase, but variable costs per unit will decrease.
  4. Total fixed costs will increase, and variable costs per unit will increase. (correct answer)
Explanation: Operating at 110% of normal capacity pushes the company outside its normal relevant range. This level of activity often requires incurring additional costs. Total fixed costs might increase due to needing to run an extra shift (requiring more supervisors) or renting extra equipment. Variable costs per unit are also likely to increase due to factors like overtime premiums for labor, higher maintenance costs from running machines too hard, and potential inefficiencies. Therefore, both components of cost are likely to increase. Choice D is a common misconception; while per-unit fixed costs decrease with volume, the increase in per-unit variable costs and the jump in total fixed costs at such high capacity levels will almost certainly lead to a higher overall cost per unit.

Question 7

Vexel Corp. incurs electricity costs for its factory. An analysis reveals that the cost is mixed. At the low point of activity, 5,000 machine hours, electricity cost was $18,000. At the high point, 9,000 machine hours, the cost was $28,000. The established relevant range for this cost behavior is 4,000 to 10,000 machine hours. Management is considering operating at 11,000 machine hours.

If management proceeds to operate at 11,000 machine hours, which of the following statements is the most accurate prediction regarding electricity cost?

  1. The total electricity cost will be $30,500, assuming the cost behavior remains linear.
  2. The variable cost component will increase to a rate higher than $2.50 per hour due to decreased efficiency.
  3. The fixed cost component, but not the variable rate, is likely to increase to support the higher activity level.
  4. The cost behavior formula derived from the high-low method is no longer valid, making cost prediction unreliable. (correct answer)
Explanation: The high-low method is used to determine the cost formula within the relevant range. Here, Variable cost = ($28,000 - $18,000) / (9,000 - 5,000) = $2.50/hr. Fixed cost = $18,000 - (5,000 * $2.50) = $5,500. The formula is Y = $5,500 + $2.50X. However, this is only valid from 4,000 to 10,000 hours. Operating at 11,000 hours is outside this range. Therefore, the formula cannot be reliably used for prediction. Fixed costs might increase (e.g., needing another generator), and the variable rate could change. The key insight is that the model's predictive power ceases outside the relevant range.

Question 8

A company pays for a software license that has a fee structure of $10,000 per year for up to 50 users. For each additional block of 25 users (or part thereof), an additional fee of $4,000 is charged. The company currently has 90 users and expects to grow to 135 users next year.

How would the software license cost be classified, and what is the anticipated cost for 135 users?

  1. Mixed cost; anticipated cost is $22,000.
  2. Step-fixed cost; anticipated cost is $26,000. (correct answer)
  3. Step-variable cost; anticipated cost is $22,000.
  4. Step-fixed cost; anticipated cost is $22,000.
Explanation: The cost exhibits step-fixed behavior because it is constant for a range of activity (users) and then increases in a lump sum. To calculate the total cost for 135 users: The base fee is $10,000, which covers the first 50 users. The number of users exceeding the base is 135 - 50 = 85. The additional cost is incurred in blocks of 25. The number of blocks needed is calculated by dividing the additional users by the block size: 85 / 25 = 3.4. Since the company is charged for any part of a block, it must pay for 4 full blocks. The cost of these additional blocks is 4 * $4,000 = $16,000. Therefore, the total anticipated cost is the base fee plus the additional block cost: $10,000 + $16,000 = $26,000.

Question 9

A company's production facility has a practical capacity of 40,000 units per month. The company's cost accountant has determined the relevant range for cost analysis is 25,000 to 35,000 units. Last month, actual production was 38,000 units.

Which of the following conclusions is most appropriate given the production level last month?

  1. The cost formula used for planning is likely to have understated the actual costs incurred. (correct answer)
  2. The company operated efficiently because production was higher than the relevant range.
  3. The per-unit variable costs were likely lower than expected due to economies of scale.
  4. The total fixed costs were likely lower than budgeted because capacity was exceeded.
Explanation: The relevant range (25k to 35k units) is the band of activity where the company's cost formulas are valid. Operating at 38,000 units is outside this range and is approaching practical capacity (40k units). When a company pushes production beyond its normal efficient range, it often incurs additional costs. These can include overtime pay for labor (higher variable cost per unit), increased maintenance, and potentially step-increases in fixed costs (e.g., hiring temporary supervisors). Therefore, a cost formula based on the 25k-35k range would not account for these additional costs and would likely understate the actual costs incurred at 38,000 units.

Question 10

A company has two production departments, A and B. In Department A, the total cost of maintenance is purely variable at $3 per machine hour, valid for a relevant range of 1,000 to 5,000 hours. In Department B, maintenance is a step-fixed cost of $10,000 for every 2,000-hour block of activity. The company is planning a job that will require 2,500 machine hours in Dept. A and 3,500 machine hours in Dept. B.

What is the total estimated maintenance cost for this job?

  1. $27,500 (correct answer)
  2. $17,500
  3. $20,000
  4. $30,000
Explanation: This requires calculating the cost for each department separately and then summing them. Dept A: The activity of 2,500 hours is within the relevant range (1,000-5,000). The cost is purely variable. Cost_A = 2,500 hours * $3/hour = $7,500. Dept B: The cost is step-fixed. The first block of 2,000 hours costs $10,000. The activity of 3,500 hours requires a second block (for hours 2,001 to 4,000). So the total cost for Dept. B is 2 blocks * $10,000/block = $20,000. Total Cost = Cost_A + Cost_B = $7,500 + $20,000 = $27,500. Distractor C represents only the cost for Department B. Distractor D incorrectly calculates the cost for Dept B as 3.5 * $10k (an impossible calculation) or some other error.

Question 11

A manufacturing company's relevant range of production is 15,000 to 25,000 units per month. Within this range, total fixed costs are $80,000 and the variable cost is $12 per unit. In May, the company produced 20,000 units. In June, the company anticipates producing 26,000 units to fulfill a one-time special order.

What is the most likely impact on the company's cost structure in June compared to its cost behavior within the normal relevant range?

  1. Total fixed costs will increase, and the variable cost per unit will remain at $12.
  2. The total cost for 26,000 units can be reliably predicted as $400,000 using the existing cost formula.
  3. The per-unit fixed cost will decrease, but the total variable cost relationship may no longer be linear.
  4. Both the total fixed costs and the per-unit variable cost are likely to change, but the direction and magnitude are not predictable from the data given. (correct answer)
Explanation: The relevant range is the span of activity for which the assumptions about cost behavior hold true. Since the anticipated production of 26,000 units is outside the 15,000 to 25,000 unit range, the existing cost structure is not reliable. Outside this range, fixed costs might increase (e.g., needing to rent more space or hire another supervisor), and variable costs per unit might change (e.g., overtime premiums, loss of volume discounts). Therefore, the existing formula is not applicable, and the change is not predictable without more information.

Question 12

The controller of a company stated, "Our cost structure is stable for output between 10,000 and 14,000 units. Within that range, our marginal cost is consistently $7 per unit, and producing 12,000 units results in a total cost of $124,000."

Based on the controller's statement, what is the fixed cost component within the company's relevant range?

  1. $40,000 (correct answer)
  2. $84,000
  3. $124,000
  4. $7,000
Explanation: The controller's statement provides all the necessary information. 'Marginal cost' in this linear context is the variable cost per unit, which is $7. The company produced 12,000 units, which is inside the stated relevant range (10,000 to 14,000). The total cost at this point was $124,000. The total cost formula is: Total Cost = Fixed Costs + (Variable Cost/unit * Units). We can plug in the known values and solve for Fixed Costs: 124,000=FixedCosts+(124,000 = Fixed Costs + (7 * 12,000). $124,000 = Fixed Costs + $84,000. Fixed Costs = $124,000 - $84,000 = $40,000.

Question 13

A company is planning its production for the next quarter. The plant capacity has a relevant range of 7,000 to 11,000 machine hours per month. Within this range, monthly factory overhead is represented by the equation Y = $40,000 + $5X, where Y is the total overhead and X is the number of machine hours. The company is considering a production schedule that would require 11,500 machine hours in a single month.

If the company schedules 11,500 machine hours, which of the following outcomes is most plausible?

  1. Total overhead will be $97,500, and the average overhead per hour will be $8.48.
  2. The fixed overhead component of $40,000 is likely to increase due to capacity constraints. (correct answer)
  3. The variable overhead rate of $5 per hour will decrease due to economies of scale.
  4. The cost behavior will remain linear, as the deviation from the relevant range is minimal.
Explanation: Operating at 11,500 machine hours is outside the defined relevant range of 7,000 to 11,000 hours. This means the assumptions underlying the cost equation Y = $40,000 + $5X are no longer valid. Pushing beyond maximum capacity often requires changes to the fixed cost structure, such as renting additional equipment or space, or adding a new supervisory shift, causing the $40,000 fixed component to increase. Distractor A incorrectly applies the formula outside its valid range. Distractor C is unlikely, as pushing past capacity usually leads to inefficiencies and higher variable costs (like overtime), not economies of scale. Distractor D incorrectly assumes the cost behavior remains linear.

Question 14

A company incurs a total cost of $150,000 when producing 10,000 units and $210,000 when producing 16,000 units. Management believes the relevant range is between 8,000 and 18,000 units. The cost structure consists of fixed costs and a constant per-unit variable cost.

What would be the estimated total cost if the company were to produce 8,000 units?

  1. $130,000 (correct answer)
  2. $128,000
  3. $118,000
  4. $150,000
Explanation: This is a multi-step problem. First, determine the cost formula using the two data points. The variable cost per unit is the change in cost divided by the change in activity: ($210,000 - $150,000) / (16,000 - 10,000) = $60,000 / 6,000 units = $10 per unit. Second, calculate the total fixed cost by plugging one of the data points into the cost equation: Total Cost = Fixed Cost + (Variable Cost/unit * Units). 150,000=FixedCost+(150,000 = Fixed Cost + (10 * 10,000 units) => Fixed Cost = $50,000. Third, use the formula to calculate the total cost at 8,000 units, which is within the relevant range: Total Cost = 50,000+(50,000 + (10 * 8,000) = $50,000 + $80,000 = $130,000.

Question 15

Regional Express has determined that its vehicle maintenance costs exhibit step-fixed behavior with monthly capacity steps of 50,000 miles each, costing $12,000 per step. Currently operating at 78,000 miles monthly (requiring 2 steps = $24,000), the company is analyzing three scenarios: Scenario A (85,000 miles), Scenario B (105,000 miles), and Scenario C (142,000 miles). Based on relevant range analysis, which interpretation correctly explains the cost behavior implications?

  1. All three scenarios remain within the current step level, so maintenance costs stay constant at $24,000 monthly across all scenarios
  2. Scenarios A and B require 2 steps (24,000),whileScenarioCrequires3steps(24,000), while Scenario C requires 3 steps (36,000), demonstrating the step-fixed cost characteristic
  3. Scenario A requires 2 steps (24,000),ScenarioBrequires3steps(24,000), Scenario B requires 3 steps (36,000), and Scenario C requires 3 steps ($36,000) due to step boundaries (correct answer)
  4. Each scenario requires additional steps: A needs 2.7 steps (32,400),Bneeds4.2steps(32,400), B needs 4.2 steps (50,400), and C needs 5.68 steps ($68,160)
Explanation: Step-fixed costs require determining how many complete steps each scenario needs. Steps are 50,000 miles each. Scenario A (85,000 miles): 85,000 ÷ 50,000 = 1.7, rounded up to 2 steps = $24,000. Scenario B (105,000 miles): 105,000 ÷ 50,000 = 2.1, rounded up to 3 steps = $36,000. Scenario C (142,000 miles): 142,000 ÷ 50,000 = 2.84, rounded up to 3 steps = $36,000. Choice A ignores step boundaries. Choice B incorrectly calculates Scenario B. Choice D treats costs as proportional rather than step-fixed.

Question 16

Coastal Services has identified that its customer service costs behave as a step-variable cost with steps of 500 customers served. Each step incurs $8,000 in costs. Currently serving 2,100 customers, the company is considering expanding to serve either 2,400 or 2,700 customers. Which analysis correctly interprets the relevant range implications?

  1. Customer service costs will increase by $8,000 for the 2,400 customer scenario and by $8,000 for the 2,700 customer scenario since both are within the same step
  2. Customer service costs will increase by $8,000 for the 2,400 customer scenario and by $16,000 for the 2,700 customer scenario due to crossing step boundaries (correct answer)
  3. Customer service costs will remain constant at current levels for both scenarios since step costs only change at 500-customer intervals from the base level
  4. Customer service costs cannot be determined without knowing the total number of customer service representatives currently employed by the company
Explanation: Currently serving 2,100 customers requires 5 steps (2,100 ÷ 500 = 4.2, rounded up to 5 steps). Serving 2,400 customers requires 5 steps (2,400 ÷ 500 = 4.8, rounded up to 5 steps), so costs increase by one step (8,000).Serving2,700customersrequires6steps(2,700÷500=5.4,roundedupto6steps),socostsincreasebytwosteps(8,000). Serving 2,700 customers requires 6 steps (2,700 ÷ 500 = 5.4, rounded up to 6 steps), so costs increase by two steps (16,000). Choice A incorrectly calculates the 2,700 scenario. Choice C misunderstands step-variable cost behavior. Choice D incorrectly focuses on staffing rather than cost behavior analysis.

Question 17

Alpine Electronics has been tracking its utility costs and production levels over the past year. The company's normal production range is 8,000 to 12,000 units per month. During this range, utility costs have shown a consistent linear relationship with production volume. However, the company is considering a special order that would require producing 15,000 units in a single month, which would necessitate running a third production shift and activating additional equipment.

Regarding the relevant range concept, which statement most accurately describes Alpine's situation for the special order analysis?

  1. The current utility cost pattern can be extrapolated to 15,000 units because utilities are typically variable costs that maintain linear relationships regardless of volume
  2. The current utility cost pattern cannot be reliably used for the 15,000-unit analysis because this volume falls outside the established relevant range where cost behavior has been observed (correct answer)
  3. The relevant range automatically expands to include 15,000 units once the company commits to the special order, making current cost patterns applicable
  4. The relevant range concept does not apply to special orders since they represent one-time events rather than ongoing operational decisions
Explanation: The relevant range represents the activity level where observed cost behavior patterns remain valid. Alpine's established range is 8,000-12,000 units, and 15,000 units requires additional shifts and equipment, indicating a different cost structure. Choice A incorrectly assumes all variable costs maintain linearity across all volumes. Choice C misunderstands that relevant range is based on observed behavior, not management decisions. Choice D incorrectly suggests relevant range doesn't apply to special decisions.

Question 18

Northern Logistics operates a fleet of delivery trucks and has been studying driver overtime costs. The company has observed that overtime costs behave differently across various activity levels due to scheduling constraints and union rules. For routes requiring 1,000-1,500 total driver hours monthly, overtime averages $15 per hour for all hours above 1,200. For routes requiring 1,501-2,200 total hours, overtime averages $18 per hour for all hours above 1,400 due to weekend premium rates. The company currently schedules 1,300 hours monthly.

If Northern Logistics increases monthly hours to 1,800, which aspect of relevant range analysis is most critical for accurate cost prediction?

  1. The overtime cost structure changes from $15 to $18 per hour, and the threshold for overtime eligibility changes from 1,200 to 1,400 hours
  2. The company moves from paying overtime on 100 hours monthly to paying overtime on 400 hours monthly, representing a 300% increase in overtime volume
  3. The relevant range change requires recalculating both the variable overtime rate and the base hour threshold, affecting both the slope and intercept of the cost function (correct answer)
  4. The increase in total hours automatically triggers the higher overtime rate for all hours worked, making the previous cost structure completely irrelevant
Explanation: Moving from 1,300 to 1,800 hours crosses relevant ranges, changing both the overtime rate ($15 to $18) and the threshold (1,200 to 1,400 hours). This affects both the slope (rate) and intercept (threshold) of the cost function. Current: 100 hours × $15 = $1,500. New: 400 hours × $18 = $7,200. Choice A identifies the changes but doesn't emphasize the cost function implications. Choice B focuses only on volume change. Choice D incorrectly suggests all hours get overtime rates.

Question 19

Metro Delivery tracks its vehicle maintenance costs and has observed the following pattern: from 10,000 to 25,000 miles per month, costs are $0.08 per mile plus $3,000 fixed. From 25,001 to 40,000 miles, costs are $0.12 per mile plus $3,000 fixed due to increased wear. If Metro typically operates at 22,000 miles monthly but is planning a month with 28,000 miles, what represents the most significant relevant range consideration?

  1. The variable cost rate increases from $0.08 to $0.12 per mile while fixed costs remain constant, requiring adjustment of the cost prediction model (correct answer)
  2. The cost behavior remains linear within each range, so standard cost-volume-profit analysis techniques continue to apply without modification
  3. The relevant range shift invalidates all previous cost data, requiring Metro to establish entirely new cost behavior patterns for future planning
  4. The change only affects variable costs, so Metro can simply multiply the additional 3,000 miles by the new $0.12 rate to determine the cost impact
Explanation: Moving from 22,000 to 28,000 miles crosses relevant range boundaries, changing the variable cost rate from $0.08 to $0.12 per mile. The cost prediction model must be adjusted to reflect this new cost structure. Choice B ignores the significance of the rate change. Choice C overstates the impact - previous data remains valid for its respective range. Choice D incorrectly calculates by only considering incremental miles rather than applying the new rate to all miles in the new range.

Question 20

DataFlow Services provides cloud computing support and has analyzed its server costs across different usage levels. The company has identified that server costs behave as mixed costs with the following pattern: Level 1 (0-10,000 GB): $500 monthly base plus $0.05 per GB; Level 2 (10,001-25,000 GB): $800 monthly base plus $0.04 per GB; Level 3 (25,001-50,000 GB): $1,200 monthly base plus $0.03 per GB. DataFlow currently uses 8,000 GB monthly and is evaluating a client contract that would increase usage to 22,000 GB monthly.

When DataFlow moves from 8,000 GB to 22,000 GB monthly usage, which statement most accurately describes the relevant range impact on cost behavior analysis?

  1. Total server costs will increase from $900 to $1,680, representing a cost per GB decrease from $0.1125 to $0.0764 due to economies of scale
  2. The variable cost rate decreases from $0.05 to $0.04 per GB, but the fixed cost base increases from $500 to $800, requiring analysis of both components (correct answer)
  3. The company should anticipate total costs of $1,500 based on applying the new Level 2 rates to the incremental 14,000 GB above current usage
  4. Moving between relevant ranges invalidates cost-volume-profit analysis since the fundamental cost behavior assumptions no longer hold consistently
Explanation: Moving from Level 1 to Level 2 changes both cost components: variable rate decreases ($0.05 to 0.04)whilefixedbaseincreases(0.04) while fixed base increases (500 to $800). Current total: $500 + (8,000 × $0.05) = $900. New total: $800 + (22,000 × $0.04) = $1,680. Choice A calculates correctly but misinterprets the cost behavior components. Choice C incorrectly applies rates only to incremental usage. Choice D overstates the impact - CVP analysis can still be used within each relevant range.