Zero Turbulence Airline provides air transportation services between Los Angeles, California, and Kona, Hawaii. A single Los Angeles to Kona round$-$trip flight has the

following operating statistics:

It is assumed that the fuel, crew salaries, and airplane depreciation are fixed, regardless of the number of seats sold for the round$-$trip flight.

a$.$ Compute the break$-$even number of seats sold on a single round$-$trip flight for the overall enterprise product, E$.$ Assume that the overall product mix is $20\%$ business

class and $80\%$ economy class tickets.

Total number of seats at break$-$even

b$.$ How many business class and economy class seats would be sold at the break$-$even point?

Business class seats at break$-$even

seats

Economy class seats at break$-$even

seats