If average total cost equals $15 at 20 units of output and average total cost equals $15 at 21 units of output,then the marginal cost of the 21st unit is ____.
A) zero
B) $15
C) $20
D) $21
Correct Answer:
Verified
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Q113: Which of the following is true?
A) If
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A)
A) less than accounting profits
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