Assume that output increased from 1550 to

问题单项选择题

Assume that output increased from 1550 to 1850 units per day as a result of increasing labor from 200 to 210 workers. The marginal product of labor is closest to:（）

A. 1.55 units per day per worker.

B. 30 units per day per worker.

C. 1.25 units per day per worker.

答案

参考答案：B

解析：

Marginal product is the additional output per additional unit of an input (labor). Since output changed by 300 units and labor changed by 10 workers, the marginal product is 300/10=30 units per day per worker.