An aeroplane is consuming fuel at a rate of 20 l/min when cruising at an altitude of 3000m at a constant speed. Assuming the drag coefficient to remain the same, determine the rate of fuel consumption at an altitude of 9000m at the same speed.
Assuming the air density remains the same, the rate of fuel consumption at an altitude of 9000m at the same speed would be the same as at 3000m. The rate of fuel consumption would remain at 20 l/min.
