Verified Answer :

Dlesar

It's easier to write if you convert 1/4 into 0.25.

\(\frac{0.25mi}{1.6min} = \frac{1mi}{xmin}\)

Then you use algebra to find that he ran the mile in 6.4 minutes.

There are four 1/4 miles in a mile. 
4*1.6 = 6.4

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