题目内容

Suppose that for a particular firm the only variable input into the production process is labor and that output equals zero when no workers are hired. In addition, suppose that the average total cost when 5 units of output are produced is $80, and the marginal cost of the sixth unit of output is $160. What is the average total cost when six units are produced?

A. $80.00
B. $83.33
C. $88.33
D. $93.33

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Lim Industries has average variable costs of $1 and average total costs of $4 when it produces 900 units of output. The firm's total fixed costs equal

A. $3.
B. $5.
C. $2,700.
D. $3,700.

A firm produces 100 units of output at a total cost of $1,900. If fixed costs are $100,

A. average fixed cost is $19.
B. average variable cost is $18.
C. average total cost is $20.
D. average total cost is $21.

When marginal cost is less than average total cost,

A. marginal cost must be falling.
B. average variable cost must be falling.
C. average total cost is falling.
D. average total cost is rising.

Average total cost is increasing whenever

A. total cost is increasing.
B. marginal cost is increasing.
C. marginal cost is less than average total cost.
D. marginal cost is greater than average total cost.

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