Answer: 4 units of labor
Step-by-step explanation:
Optimum amount of labor occurs where marginal revenue equals marginal cost which means:
Marginal revenue product = Cost of labor
Marginal revenue product = Marginal product of labor * Prize of pizza
Marginal product of labor = differentiation of Q
= dQ/dL
= d(3L - 0.3L²)
= 3 - 0.6L
Marginal revenue product = (3 - 0.6L) * 10
= 30 - 6L
Marginal revenue product = Cost of labor
30 - 6L = 6
30 - 6 = 6L
L = 24/6
= 4 units of labor