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Old 1st Mar 2011, 09:20
  #7004 (permalink)  
luisjuan
 
Join Date: Dec 2010
Location: Madrid
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A doubt

You travel 12 miles. How much fuel will you need if you burn 150 kgs per hour, and are travelling at 90 mph?

I have a big doubt: my reasoning is the following:

Travelling at 60mph--> 12min for 12 miles

Travelling at 120mph--> 6 min for 12 miles

Yet, if I travelled at 90mph--> 9 min for 12 miles, shouldnt that be right?????, proportional calculations.


Well no, the solution is 20, which is 0,1333 (8minutes) X 150 and not 0,15 (9minutes).

Why is this???
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