Refer to the information provided in Table 8.4 below to answer the question(s) that follow.
Table 8.4ProduceUsing TechniquesUnits of Variable KInputs L1 unit of outputA4  4?B2  6????2 units of outputA 7   6?B410????3 units of outputA  8    6?B  6 11Refer to Table 8.4. Assuming the price of capital (K) is $10 per unit and the price of labor (L) is $5 per unit, the marginal cost of producing the third unit of output is

A. $15.
B. $20.
C. $25.
D. indeterminate from this information.


Answer: B

Economics

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