The short-run production function for a manufacturer of flash memory drives is shown in the table below. Based on this information, answer the following question.
Input of Labor
(workers per week) Total Output of Flash Memory Drives
0 0
1 25
2 60
3 85
4 105
5 115
6 120
a. Calculate the average physical product at each quantity of labor.
b. Calculate the marginal physical product of labor at each quantity of labor
c. At what point does marginal product begin to diminish?