Question

Economies of scale occur when Select one: a. long-run average total costs rise as output increases....

Economies of scale occur when

Select one:

a. long-run average total costs rise as output increases.

b. long-run average total costs fall as output increases.

c. long-run average total costs are constant.

NumberofWorkers

Output

FixedCost

VariableCost

TotalCost

0

0

$50

$0

1

90

$50

$20

$70

2

170

$50

$40

3

230

$50

$60

$110

4

240

$80

$130


Refer to Table 13-3. If the firm produces an output of 170 units, what is the total cost?

Select one:

a. 50 dollars

b. 60 dollars

c. 70 dollars

d. 90 dollars

NumberofWorkers

Output

FixedCost

VariableCost

TotalCost

0

0

$50

$0

1

90

$50

$20

$70

2

170

$50

$40

3

230

$50

$60

$110

4

240

$80

$130


Refer to Table 13-3. The marginal product of the fourth worker is

Select one:

a. 10 units.

b. 60 units.

c. 230 units.

d. 240 units.

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Answer #1

1. Option B. long-run average total costs fall as output increases.

Explanation: In economies of scale, a firm faces falling average total cost with a rise in output.

2. Option D. 90 dollars

Explanation: Total cost = fixed cost + variable cost = $50 + $40 = $90.

3. Option A. 10 units

Explanation: The marginal product of the 4th worker = total product of 4 workers - total product of 3 workers = 240 - 230 = 10 units.

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