A farmer who has fixed amounts of land and capital finds that total product is 24 for the first worker hired, 32 when two workers are hired, 37 when three are hired, and 40 when four are hired. The farmer's product sells for $3 per unit, and the wage rate is $13 per worker. The marginal product of the second worker is
A) 24.
B) 8.
C) 5.
D) 1

Question

Quizplus · Accepted Answer

Marginal product is the additional quantity of output produced by the addition of one more unit of input. 
The marginal product of the second worker can be calculated as the difference between total product when two workers are hired and total product when only one worker is hired. 
Therefore, marginal product of the second worker = Total product with two workers - Total product with one worker 
= 32 - 24 
= 8. 
Hence, the correct answer is (B) 8.

A Farmer Who Has Fixed Amounts of Land and Capital