need help plz with accounting

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: 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