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You are flying a route that will take 22 minutes. The fuel consumption of your aircraft is 35 litres per hour. How much fuel will you use on this leg?

  • A

    12.8 litres

  • B

    14.4 litres

  • C

    12 litres

  • D

    16.1 litres

This is a relatively straightforward calculation.

First, we can check the units - the consumption is in litres/hr and the answers are in litres. Our flight time is in minutes, which we can convert to hours by dividing by 60;

  • 22/60 = 0.367 hrs

Fuel consumption is our rate of consumption x the time we consume it for. If we fly for 0.367 hrs and burn 35 litres per hour, we will burn:

  • 0.367 x 35 = 12.8 litres

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