答案如下
Which of the following must be true if average total costs are rising? Marginal cost is:
A) less than average total cost.
B) less than average variable cost.
C) greater than average total cost.
D) equal to average total cost.
Your answer: C was correct!
When average total costs are rising, marginal cost is greater than average total cost. This relationship is easy to understand if you think about your average grade in a class. If your average grade in a class increased after the last exam, the grade you earned on the last exam (similar to marginal cost) must have been greater than the previous average grade (similar to average total cost).
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发表于 2006-3-29 17:12
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