Economics for Today 9th Edition by Irvin Tucker

تمرين 5

If the units of variable input in a production process are 1, 2, 3, 4, and 5 and the corresponding total outputs are 10, 22, 33, 42, and 48, respectively, the marginal product of the fourth unit is
A) 2.
B) 6.
C) 9.
D) 42.