Marginal Airlines. Marginal Airlines runs 10 flights per day at a total cost of $50,000, including $30,000 in fixed costs for airport fees and the reservation system and $20,000 for flight crews and...

Marginal Airlines. Marginal Airlines runs 10 flights per day at a total cost of $50,000, including $30,000 in fixed costs for airport fees and the reservation system and $20,000 for flight crews and food service.

a. If an 11th flight would have 25 passengers, each paying $100, would it be sensible to run the flight?

b. If the 11th flight would have only 15 passengers, would it be sensible to run the flight?