Introduction to Factor Markets

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AP Microeconomics › Introduction to Factor Markets

Questions 1 - 10
1

A competitive labor market exists for landscapers. Based on the labor market shown in the table, what is the equilibrium wage and quantity of labor employed?

(Quantity of labor is measured in number of workers.)

Question graphic

$$w=\12\text{/hour and }L=180\text{ workers}$$

$$w=\14\text{/hour and }L=200\text{ workers}$$

$$w=\16\text{/hour and }L=140\text{ workers}$$

$$w=\12\text{/hour and }L=220\text{ workers}$$

$$w=\14\text{/hour and }L=180\text{ workers}$$

Explanation

This question tests your ability to identify equilibrium in factor markets, specifically in a competitive labor market for landscapers. Labor demand represents firms' willingness to hire based on derived demand—the demand for landscaping services creates demand for landscapers. The table displays wage rates with corresponding quantities of labor supplied and demanded. Equilibrium occurs where these quantities are equal: at $w = \$14/\text{hour}$, both supply and demand equal 200 workers. A common error is selecting a point where supply or demand alone equals a nice round number, rather than where they intersect. To find labor market equilibrium, systematically compare the supply and demand columns row by row. The equilibrium wage and employment level appear where these values match exactly.

2

A competitive labor market exists for hotel housekeepers. Based on the labor market shown in the table, what is the equilibrium wage and quantity of labor employed?

(Quantity of labor is measured in number of workers.)

Question graphic

$$w=\11\text{/hour and }L=220\text{ workers}$$

$$w=\12\text{/hour and }L=260\text{ workers}$$

$$w=\12\text{/hour and }L=240\text{ workers}$$

$$w=\13\text{/hour and }L=260\text{ workers}$$

$$w=\13\text{/hour and }L=240\text{ workers}$$

Explanation

This question tests your understanding of equilibrium in factor markets, specifically for hotel housekeepers. In factor markets, labor demand is derived demand—hotels hire housekeepers because guests demand clean rooms, not because of direct demand for housekeeping labor. The table shows various wage rates with corresponding quantities of labor supplied and demanded. Market equilibrium occurs where quantity supplied equals quantity demanded: at w=$12/hour, both equal 240 workers. A common mistake is looking for the highest or lowest wage rather than the intersection point of supply and demand. To solve these problems efficiently, scan down the table comparing the supply and demand columns. Stop when you find matching values—this row gives you both the equilibrium wage and employment level.

3

A labor market for substitute teachers is shown in the table below. Labor demand is derived from the marginal revenue product (MRP) of substitute teachers. Based on the labor market shown, what is the equilibrium wage and employment?

Table: Substitute Teacher Labor Market (per day)

  • Wage ($/day): 80, 90, 100, 110, 120
  • Quantity of labor demanded (subs): 500, 450, 400, 350, 300
  • Quantity of labor supplied (subs): 200, 300, 400, 500, 600
Question graphic

$100 per day and 400 subs

$120 per day and 300 subs

$80 per day and 200 subs

$110 per day and 500 subs

$90 per day and 450 subs

Explanation

The skill here is the introduction to factor markets. Derived demand is the demand for a resource that depends on the demand for the product it helps create, and labor demand is determined by the marginal revenue product (MRP), which measures the additional revenue from hiring one more worker. The table presents the quantities of substitute teachers demanded and supplied at various wage rates. The equilibrium is at $100 per day and 400 subs because this is the point where quantity demanded equals quantity supplied. A common misconception is that labor demand is direct like consumer goods, but it is derived from the product's demand unlike direct demand for the good itself. A transferable strategy is to trace the MRP to understand the downward-sloping labor demand curve. Finally, read the equilibrium wage and employment from the intersection of the labor demand and supply curves.

4

A labor market for pharmacy technicians is shown in the table below. Labor demand is derived from the marginal revenue product (MRP) of technicians. Based on the labor market shown, what is the equilibrium wage and employment?

Table: Pharmacy Technician Labor Market (per hour)

  • Wage ($/hour): 16, 18, 20, 22, 24
  • Quantity of labor demanded (techs): 500, 450, 400, 350, 300
  • Quantity of labor supplied (techs): 200, 300, 400, 500, 600
Question graphic

$18 per hour and 300 techs

$24 per hour and 600 techs

$20 per hour and 400 techs

$16 per hour and 200 techs

$22 per hour and 350 techs

Explanation

The skill here is the introduction to factor markets. Derived demand is the demand for a resource that depends on the demand for the product it helps create, and labor demand is determined by the marginal revenue product (MRP), which measures the additional revenue from hiring one more worker. The table presents the quantities of pharmacy technicians demanded and supplied at various wage rates. The equilibrium is at $20 per hour and 400 techs because this is the point where quantity demanded equals quantity supplied. A common misconception is that labor demand is direct like consumer goods, but it is derived from the product's demand unlike direct demand for the good itself. A transferable strategy is to trace the MRP to understand the downward-sloping labor demand curve. Finally, read the equilibrium wage and employment from the intersection of the labor demand and supply curves.

5

A labor market for delivery drivers is shown in the table below. Labor demand is derived from the marginal revenue product (MRP) of drivers. Based on the labor market shown, what is the equilibrium wage and employment?

Table: Delivery Driver Labor Market (per hour)

  • Wage ($/hour): 14, 15, 16, 17, 18
  • Quantity of labor demanded (drivers): 600, 550, 500, 450, 400
  • Quantity of labor supplied (drivers): 300, 350, 400, 450, 500
Question graphic

$17 per hour and 450 drivers

$15 per hour and 350 drivers

$18 per hour and 500 drivers

$14 per hour and 600 drivers

$16 per hour and 500 drivers

Explanation

The skill here is the introduction to factor markets. Derived demand is the demand for a resource that depends on the demand for the product it helps create, and labor demand is determined by the marginal revenue product (MRP), which measures the additional revenue from hiring one more worker. The table presents the quantities of delivery drivers demanded and supplied at various wage rates. The equilibrium is at $17 per hour and 450 drivers because this is the point where quantity demanded equals quantity supplied. A common misconception is that labor demand is direct like consumer goods, but it is derived from the product's demand unlike direct demand for the good itself. A transferable strategy is to trace the MRP to understand the downward-sloping labor demand curve. Finally, read the equilibrium wage and employment from the intersection of the labor demand and supply curves.

6

A labor market for construction laborers is shown in the table below. Labor demand is derived from the marginal revenue product (MRP) of laborers. Based on the labor market shown, what is the equilibrium wage and employment?

Table: Construction Labor Market (per hour)

  • Wage ($/hour): 15, 16, 17, 18, 19
  • Quantity of labor demanded (laborers): 700, 650, 600, 550, 500
  • Quantity of labor supplied (laborers): 400, 450, 500, 550, 600
Question graphic

$18 per hour and 550 laborers

$16 per hour and 450 laborers

$17 per hour and 600 laborers

$19 per hour and 600 laborers

$15 per hour and 700 laborers

Explanation

The skill here is the introduction to factor markets. Derived demand is the demand for a resource that depends on the demand for the product it helps create, and labor demand is determined by the marginal revenue product (MRP), which measures the additional revenue from hiring one more worker. The table presents the quantities of construction laborers demanded and supplied at various wage rates. The equilibrium is at $18 per hour and 550 laborers because this is the point where quantity demanded equals quantity supplied. A common misconception is that labor demand is direct like consumer goods, but it is derived from the product's demand unlike direct demand for the good itself. A transferable strategy is to trace the MRP to understand the downward-sloping labor demand curve. Finally, read the equilibrium wage and employment from the intersection of the labor demand and supply curves.

7

A landscaping company hires gardeners in a competitive labor market. Based on the labor market shown in the table, what is the equilibrium wage and quantity of labor (gardeners) employed?

Labor market table (wage per hour, $W$):

  • At $W = $10: $Q_D = 40$ gardeners, $Q_S = 20$ gardeners
  • At $W = $12: $Q_D = 35$ gardeners, $Q_S = 25$ gardeners
  • At $W = $14: $Q_D = 30$ gardeners, $Q_S = 30$ gardeners
  • At $W = $16: $Q_D = 25$ gardeners, $Q_S = 35$ gardeners
  • At $W = $18: $Q_D = 20$ gardeners, $Q_S = 40$ gardeners
Question graphic

$W = $10 per hour and 40 gardeners

$W = $14 per hour and 30 gardeners

$W = $18 per hour and 20 gardeners

$W = $12 per hour and 25 gardeners

$W = $16 per hour and 35 gardeners

Explanation

This question tests your understanding of factor markets, where firms demand labor and workers supply it. In factor markets, the demand for labor is a derived demand—firms hire workers based on how much revenue those workers can generate from producing goods or services. The table shows the labor market for gardeners, with quantity demanded (QD) and quantity supplied (QS) at different wage rates. To find equilibrium, look for where QD equals QS: at W = $14, both QD and QS equal 30 gardeners. A common misconception is confusing factor markets with product markets—remember that in factor markets, firms are the demanders and workers are the suppliers. The key strategy is to scan the table systematically, comparing QD and QS at each wage level. When they match, you've found the equilibrium wage and employment level.

8

A retail store hires cashiers in a competitive labor market. Based on the labor market shown in the table, what is the equilibrium wage and quantity of labor (cashiers) employed?

Labor market table (wage per hour, $W$):

  • At $W = $11: $Q_D = 52$ cashiers, $Q_S = 28$ cashiers
  • At $W = $12: $Q_D = 48$ cashiers, $Q_S = 32$ cashiers
  • At $W = $13: $Q_D = 44$ cashiers, $Q_S = 36$ cashiers
  • At $W = $14: $Q_D = 40$ cashiers, $Q_S = 40$ cashiers
  • At $W = $15: $Q_D = 36$ cashiers, $Q_S = 44$ cashiers
Question graphic

$W = $12 per hour and 32 cashiers

$W = $11 per hour and 52 cashiers

$W = $15 per hour and 44 cashiers

$W = $13 per hour and 44 cashiers

$W = $14 per hour and 40 cashiers

Explanation

This question focuses on factor markets in retail, specifically for cashiers. In factor markets, retail stores demand cashiers based on derived demand—they hire cashiers because customers need checkout services, making labor demand dependent on store traffic and sales. Examining the table systematically, we look for equilibrium where quantity demanded equals quantity supplied. At W = $14 per hour, both QD and QS equal 40 cashiers, establishing perfect market equilibrium. Students often mistakenly view labor demand as direct rather than derived—remember that firms hire workers only because those workers help produce goods or services that customers want. The key strategy for finding equilibrium is to compare QD and QS at each wage level in the table. When these quantities match exactly, you've identified the market-clearing wage and employment level.

9

A delivery company hires truck drivers in a competitive labor market. Based on the labor market shown in the table, what is the equilibrium wage and quantity of labor (drivers) employed?

Labor market table (wage per hour, $W$):

  • At $W = $22: $Q_D = 80$ drivers, $Q_S = 40$ drivers
  • At $W = $24: $Q_D = 70$ drivers, $Q_S = 50$ drivers
  • At $W = $26: $Q_D = 60$ drivers, $Q_S = 60$ drivers
  • At $W = $28: $Q_D = 50$ drivers, $Q_S = 70$ drivers
  • At $W = $30: $Q_D = 40$ drivers, $Q_S = 80$ drivers
Question graphic

$W = $30 per hour and 40 drivers

$W = $28 per hour and 50 drivers

$W = $24 per hour and 50 drivers

$W = $26 per hour and 60 drivers

$W = $22 per hour and 80 drivers

Explanation

This question examines factor markets in the transportation industry, specifically for truck drivers. In factor markets, delivery companies demand drivers based on derived demand—they hire drivers because customers demand package delivery services, not because they want drivers per se. Analyzing the table, we search for equilibrium where quantity demanded equals quantity supplied. At W = $26 per hour, both QD and QS equal 60 drivers, establishing market equilibrium. Students often mistakenly think of labor demand as direct demand, but remember it's derived from the demand for the final service. The transferable approach is to methodically check each wage level in the table, comparing demand and supply quantities. The equilibrium point shows both the market wage and the number of workers employed when the market clears perfectly.

10

A bakery hires pastry chefs in a competitive labor market. Based on the labor market shown in the table, what is the equilibrium wage and quantity of labor (chefs) employed?

Labor market table (wage per hour, $W$):

  • At $W = $15: $Q_D = 30$ chefs, $Q_S = 10$ chefs
  • At $W = $18: $Q_D = 25$ chefs, $Q_S = 15$ chefs
  • At $W = $21: $Q_D = 20$ chefs, $Q_S = 20$ chefs
  • At $W = $24: $Q_D = 15$ chefs, $Q_S = 25$ chefs
  • At $W = $27: $Q_D = 10$ chefs, $Q_S = 30$ chefs
Question graphic

$W = $18 per hour and 25 chefs

$W = $21 per hour and 20 chefs

$W = $15 per hour and 10 chefs

$W = $27 per hour and 30 chefs

$W = $24 per hour and 25 chefs

Explanation

This question tests factor market analysis for pastry chefs in a bakery setting. In factor markets, bakeries demand chefs based on derived demand—they hire chefs because customers demand baked goods, making labor demand dependent on product demand. The table shows various wage rates with corresponding quantities demanded and supplied. To find equilibrium, locate where QD equals QS: at W = $21 per hour, both quantity demanded and quantity supplied equal 20 chefs. A common mistake is focusing only on the wage without checking that quantities match—both conditions must be satisfied for true equilibrium. The key strategy is to read across each row systematically, comparing the QD and QS values. When you find matching quantities, that wage represents the market-clearing price where neither shortage nor surplus exists.

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