When Caroline's dress factory hires two workers,the total product is 50 dresses.When she hires three workers,the total product is 60,and when she hires four workers,the total product is 65.The slope of the marginal product curve between two and four workers hired is:
A) positive.
B) zero.
C) infinite.
D) negative.

Question

Quizplus · Accepted Answer

To find the slope of the marginal product curve, we need to find the change in total product (output) resulting from adding one more worker. 
From the given information, we can calculate the following marginal products:
MP2 = TP2 - TP1 = 50 - 0 = 50
MP3 = TP3 - TP2 = 60 - 50 = 10
MP4 = TP4 - TP3 = 65 - 60 = 5
As we can see, the marginal products are decreasing as more workers are hired. This implies that the marginal product curve is downward sloping, i.e., negative. Therefore, the answer is D.

When Caroline's Dress Factory Hires Two Workers,the Total Product Is