If average total costs are $40 and average variable cost are $20 at 10 units of output and the marginal cost of the 11th unit is $30, what is the average total cost of 11 units?
A.
$23.00
B.
$20.09
C.
$30.00
D.
$39.09
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参考答案:
举一反三
【判断题】Grinders are applied to sharpening cutters and tools.