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Old 10th Apr 2018, 10:12
  #3474 (permalink)  
quantify
 
Join Date: Apr 2018
Location: Perth
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Can someone please explain how to do big division quickly in your head? I can simplify some fractions, but struggle with others.

You burn 150 kgs of fuel per hour. How much fuel will you need to travel 754 miles if you average a speed of 870 mph?

how do you divide the fraction of 754/870

You travel at an average speed of 190 mph. How much fuel do you need for a 114 mile trip if you burn 50 kgs per hour?

how do you simplify 114/190? I get it will become 57/95 after which I get stuck. Any help would be great, thanks.
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