Suppose the production function is given by Q = 2K + 5L.What is the marginal product of labor when 15 units of capital and 10 units of labor are employed?
A) 2
B) 5
C) 25
D) 50

Question

Quizplus · Accepted Answer

To find the marginal product of labor, we differentiate the production function with respect to L:
MPₗ = ∂Q/∂L = 5
Substituting K=15 and L=10 into the production function, we get:
Q = 2(15) + 5(10) = 75
Therefore, when 15 units of capital and 10 units of labor are employed, the marginal product of labor is 5. 
Since the given options are all numerical values, the answer is choice B.

Suppose the Production Function Is Given by Q = 2K