Break$-$Even Sales and Sales Mix for a Service Company

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:

Fuel $$5,452$

Flight crew salaries $4,176$

Airplane depreciation $1,972$

Variable cost per passenger$$business class $60$

Variable cost per passenger$$economy class $50$

Round$-$trip ticket price$$business class $550$

Round$-$trip ticket price$$economy class $290$

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 fill in the blank $1$ seats

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

Business class seats at break$-$even fill in the blank $2$ seats

Economy class seats at break$-$even fill in the blank $3$ seats