An international air carrier plans to purchase a jumbo$-$class aircraft to serve the ChicagoLondon city pair. Restrictions in landing slots at Heathrow Airport allowed the purchase of

five landing$/$take$-$off slots, one per weekday. The carrier does not intend to offer weekend

service. The following table presents passenger demand estimates and fares charged by

competitors:

Five$-$weekday One$-$way

Trip demand fare$($$$)$

Chicago$-$London$-$Chicago $975400$

Chicago$-$London $230680$

London$-$Chicago$-$London $880475$

London$-$Chicago $400775$

The round$-$trip Chicago$-$London$-$Chicago is $13,000$ km$,$ and the aircraft choices and cOsts are:

Seating Oper. Cost Fixed

Aircraft capacity seat$-$km cost$/$year

B$-7473852\mathrm{.}57$ $$4\mathrm{.}5$ million

DC$-102352\mathrm{.}97$ $$3\mathrm{.}7$ million

Should the airline enact service and which aircraft shpuld be chosen? Solve based on profit

maximization.