Question 1134386
Let miles/gal = x and average speed = v,

The expression can be set as x=k/v

Under the first condition, 
{{{16=k/53}}}
{{{k=16*53=848}}}

Substitute this k value into the second condition, where x=? v=62mph

{{{x=(848)/62}}}
x~13.68 miles per gallon.

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