Answer: For efficiency 1 hair cut should be given.
Firm A should cut hair, because the marginal cost is lower than the willingness to pay.
Step-by-step explanation:
Given Data:
Consumers' Willingness to Pay,
Charles: $50
Gilberto: $35
Juanita: $25
Dina: $40
Marginal cost,
Firm A: $25
Firm B: $40
Firm C: $30
Firm D: $45
The marginal willingness to pay is higher than the marginal cost till the first haircut. So, for efficiency, 1 haircuts should be given.
Firm A should cut hair, because the marginal cost is lower than the willingness to pay.