Would someone be kind enough to explain to me how the miles per minute method works when working out time? I have been using the fraction method but feel this might be a quicker way to working time questions out.
(Original post by Old_Simon)
Lol. You have to do this for real, upside down, pulling 6g, and doing 500 knots in an aircraft that cost the tax payer tens of millions of pounds. Ok the Q above ( these need to be done in your head in seconds if you ever want to sit in a military aircraft)
In the first hour we do 210 miles. We subtract that from 392 so we have 182 miles to run. What is 182/210? We notice immediately that both 182 and 210 are divisible by 14 conveniently giving us 13/15. 1/15 of one hour takes 4 minutes. We burn fuel at 135 kgs an hour and we notice immediately by inspection 135 is divisible by 15 giving us 9.
13 x 9 = 117 kgs. So in total we burn 210 + 117 kgs of fuel.