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2. (18 pts.) Ball Bearings, Inc. operates in a perfectly competitive market and

ID: 1119817 • Letter: 2

Question

2. (18 pts.) Ball Bearings, Inc. operates in a perfectly competitive market and faces the following production costs uantity Total Fixed Costs Total Variable Costs $100 100 100 100 100 100 100 0 50 70 90 140 200 360 4 a. (8 pts.) Calculate the company's average fixed costs, average variable costs, average total costs, and marginal costs at each level of production b. (4 pts.) The price of a case of ball bearings is $50. Seeing that she can't make a profit, the CEO decides to shut down operations. What are the firm's profits/losses? Was this a wise decision? Explain 2. (cont'd) c. (6 pts.) Assuming all other firms face the same costs (perfect information), what transitions will occur in this market to achieve long-run equilibrium? Will the price rise or fall? Will the market quantity rise or fall? Will the quantity supplied by a single firm rise or fall? Show this result graphically by drawing the firm and the market side-by-side

Explanation / Answer

Ball Bearings, Inc. faces costs of production as follows

Quantity

[Q]

Total Fixed Costs

[TFC]

Total Variable Costs

[TVC]

Average fixed costs

[AFC=TFC/Q]

Average variable costs

[AVC=TVC/Q]

Average total costs

[ATC=AFC+AVC]

Marginal costs

[TVC2-TVC1/Q2-Q1]

0

$100

$0

-$100

-$100

1

$100

$50

$100

$50

$150

50-0/1-0=$50

2

$100

$70

$50

$35

$85

70-50/2-1=$20

3

$100

$90

$33.33

$30

$63.33

$20

4

$100

$140

$25

$35

$60

$50

5

$100

$200

$20

$40

$60

$60

6

$100

$360

$16.667

$60

$76.667

$160

Quantity

[Q]

Total Fixed Costs

[TFC]

Total Variable Costs

[TVC]

Average fixed costs

[AFC=TFC/Q]

Average variable costs

[AVC=TVC/Q]

Average total costs

[ATC=AFC+AVC]

Marginal costs

[TVC2-TVC1/Q2-Q1]

0

$100

$0

-$100

-$100

1

$100

$50

$100

$50

$150

50-0/1-0=$50

2

$100

$70

$50

$35

$85

70-50/2-1=$20

3

$100

$90

$33.33

$30

$63.33

$20

4

$100

$140

$25

$35

$60

$50

5

$100

$200

$20

$40

$60

$60

6

$100

$360

$16.667

$60

$76.667

$160

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