Second City Airlines operates $35$ scheduled round$-$trip flights each week between New York

and Chicago. It charges a fixed one$-$way fare of $$200$ per passenger. Second City Airlines

can carry $150$ passengers per one$-$way flight. Fuel and other flight related costs are $$5,000$

per one$-$way flight. On$-$flight meal and refreshment costs average $$5$ per passenger.

Flight crew; ground crew, advertising, and other administrative expenditures for the

New York$-$to$-$Chicago route amount to $$400,000$ each week.