Short-Run Production Costs - AP Microeconomics

1. What happens to ATC if TVC rises?

   ATC increases. Higher variable costs increase average total cost.

2. Identify the relationship when MC is less than AVC.

   AVC is decreasing. When marginal is below average, it pulls average down.

3. If ATC is rising, what can be inferred about MC?

   MC is greater than ATC. When marginal exceeds average, average increases.

4. What is the formula for Average Fixed Cost (AFC)?

   $AFC = \frac{TFC}{Q}$. Fixed costs spread over quantity produced.

5. Calculate AVC given $TVC = 180$ and $Q = 15$.

   $AVC = 12$. Using the formula $AVC = \frac{TVC}{Q}$.

6. Calculate ATC if AFC = $5 and AVC = $10.

   $ATC = $15. Using the relationship $ATC = AFC + AVC$.

7. Find TVC if TC = $300 and TFC = $50.

   $TVC = $250. Using the relationship $TVC = TC - TFC$.

8. Calculate TC given TFC = $100 and TVC = $400.

   $TC = $500. Using the formula $TC = TFC + TVC$.

9. Calculate AVC given TVC = $180 and Q = 15.

   $AVC = $12. Using the formula $AVC = \frac{TVC}{Q}$.

10. What happens to TVC when output is zero?

    TVC is zero. No production means no variable expenses.

11. Identify the cost curve that is U-shaped.

    Average Total Cost (ATC) curve. Falls initially due to fixed cost spreading, then rises.

12. Calculate AFC given TFC = $200 and Q = 25.

    $AFC = $8. Using the formula $AFC = \frac{TFC}{Q}$.

13. If ATC is decreasing, what is the relationship with MC?

    MC is less than ATC. When marginal cost is below average, it pulls average down.

14. What is the relationship between TFC and AFC?

    $AFC = \frac{TFC}{Q}$. AFC equals fixed costs divided by output.

15. Describe the shape of the Marginal Cost curve.

    Typically U-shaped. Reflects diminishing marginal returns in production.

16. What signifies the minimum point of AVC?

    MC equals AVC. MC intersects AVC at its lowest point.

17. If $TC = 700$ and $Q = 70$, find $ATC$.

    $ATC = 10$. Using the formula $ATC = \frac{TC}{Q}$.

18. If AVC = $10 and Q = 20, find TVC.

    $TVC = $200. Using the formula $TVC = AVC \times Q$.

19. What is the effect on AVC if TFC increases?

    No effect on AVC. AVC only depends on variable costs, not fixed costs.

20. Calculate AFC given TFC = $200$ and Q = $25$.

    $AFC = 8$. Using the formula $AFC = \frac{TFC}{Q}$.

21. Calculate MC given $\triangle TC = $60 and $\triangle Q = 6$.

    $MC = $10. Using the formula $MC = \frac{\triangle TC}{\triangle Q}$.

22. What happens to ATC if MC is greater than ATC?

    ATC increases. When marginal exceeds average, it pulls average up.

23. What is the formula for Total Cost (TC)?

    $TC = TFC + TVC$. Total cost equals fixed costs plus variable costs.

24. State the formula for Average Total Cost (ATC).

    $ATC = \frac{TC}{Q}$. Total cost divided by quantity of output.

25. Calculate ATC given TC = $600$ and Q = $50$.

    ATC = $12$. Using the formula $ATC = \frac{TC}{Q}$.

26. Calculate MC given $\triangle TC = 60$ and $\triangle Q = 6$.

    $MC = 10$. Using the formula $MC = \frac{\triangle TC}{\triangle Q}$.

27. What is the impact on ATC if TFC increases?

    ATC increases. Higher fixed costs increase average total cost.

28. If TC = $700$ and Q = $70$, find ATC.

    $ATC = 10$. Using the formula $ATC = \frac{TC}{Q}$

29. Find MC if $\triangle TC = $40 and $\triangle Q = 4$.

    $MC = $10. Using the formula $MC = \frac{\triangle TC}{\triangle Q}$.

30. What occurs to AFC as output increases?

    AFC decreases. Fixed costs are spread over more units.

31. Identify the result if MC is less than ATC.

    ATC is decreasing. When marginal is below average, it pulls average down.

32. State the formula for Average Variable Cost (AVC).

    $AVC = \frac{TVC}{Q}$. Variable costs per unit of output.

33. Describe the behavior of AVC as output increases.

    Initially decreases, then increases. U-shaped due to efficiency gains then diminishing returns.

34. What is the formula for Marginal Cost (MC)?

    $MC = \frac{\triangle TC}{\triangle Q}$. Change in total cost per additional unit produced.

35. At what point does MC intersect the ATC curve?

    At the minimum point of ATC. MC intersects ATC at its lowest point.

36. Describe the effect on ATC of a decrease in TVC.

    ATC decreases. Lower variable costs reduce average total cost.

37. Define Total Variable Cost (TVC).

    Costs that change with the level of output. These fluctuate directly with production quantity.

38. Define Total Fixed Cost (TFC).

    Costs that do not change with output level in the short run. These remain constant regardless of production quantity.

39. Describe the relationship between MC and ATC when ATC is constant.

    MC equals ATC. At the minimum, marginal equals average.

40. Identify the relationship if MC equals AVC.

    AVC is at its minimum. At minimum AVC, marginal cost equals average variable cost.

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