Find the jet fuel mileage (mpg) of a Boeing 787 Dreamliner if: C=0.024, v=900 km/h, 1 gallon=3.8 liters, 1 mile= 1.6 km, energy conversion efficiency=30%, A=2060 ft^2, 1 ft^2=0.093 m^2, drag force = 1/2(CApv^2), p=0.41 kg/m^3 at 10,000 m, jet fuel energy density=35 MJ/liter. I have calculated the drag force using the given information, but cannot figure out how to get from there to the mpg. Every formula I can find uses the mass of the plane and that isn't given as part of the problem.
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