4 A firm is producing 20 units with an average total cost of $25 and marginal cost...

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4 A firm is producing 20 units with an average total cost of $25 and marginal cost of $15. If the firm were to increase production to 21 units, which of the following must occur?

a Marginal cost wou ld decrease.

b Marginal cost wou ld increase.

c Average total cost would decrease.

d Average total cost would increase.

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Principles Of Microeconomics

ISBN: 125206

8th Edition

Authors: Joshua Gans, Stephen King, Martin Byford, N Gregory Mankiw

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