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Refer to the table below. The marginal cost of the 3rd unit of this activity is:
Refer to the table below. The marginal cost of the 3rd unit of this activity is:
A.$10
B.$30
C.$20
D.$25
正确答案：$20
标签：
微观经济学
中国大学MOOC微观经济学
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Refer to the table below. The average cost of 4 units of this activity is:
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Refer to the table below. The average benefit of 2 units of activity is: