Aircraft typically consume fuel at a higher rate when flying at a lower elevation compared with flying at the same speed at a higher elevation. Estimate the percentage decrease in the fuel consumption...

Aircraft typically consume fuel at a higher rate when flying at a lower elevation compared with flying at the same speed at a higher elevation. Estimate the percentage decrease in the fuel consumption rate for an aircraft flying at an altitude of 10 km compared with flying at the same speed at an altitude of 3 km.