Answer:
The best advice for this profit-maximizing firm is:
Use more capital than labor.
Step-by-step explanation:
a) Data and Calculations:
Price of labor = $7
Price of capital = $10
Marginal product of labor = 20
Marginal product of capital = 30
Productivity of labor = Output/Input
= 20/7
= 2.86
Productivity of capital = Output/Input
= 30/10
= 3
b) Capital is more productive than labor. The productivity of capital is 3 when compared to the productivity of labor, that is 2.86.