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average variable cost is increasing or decreasing Explain

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Ch07
Ch03, sol 03, sol 03

8. Assume that the marginal cost of production is greater than the average variable cost. Can you determine whether the average variable cost is increasing or decreasing Explain.
9. If the firm’s average cost curves are U-shaped, why does its average variable cost curve achieve

average variable cost is increasing or decreasing Explain.
No. When marginal cost is increasing, average variable cost can be either increasing or decreasing as shown in the diagram below. Marginal cost begins increasing at output level q
1
, but AVC is decreasing. This happens because MC is below AVC and is therefore pulling AVC down. AVC is decreasing for all output levels between q
1
and q
2
. At q
2
, MC cuts through the minimum point of AVC, and AVC
begins to rise because MC is above it. Thus for output levels greater than q
2
, AVC is increasing.

Chapter 7
The Cost of Production 105 Copyright © 2013 Pearson Education, Inc. Publishing as Prentice Hall.
8. Assume that the marginal cost of production is greater than the average variable cost. Can you
determine whether the average variable cost is increasing or decreasing Explain.
Yes, the average variable cost is increasing. If marginal cost is above average variable cost, each additional unit costs more to produce than the average of the previous units, so the average variable cost is pulled upward. This is shown in the diagram above for output levels greater than q
2
9. If the firm’s average cost curves are U-shaped, why does its average variable cost curve achieve

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