If John runs 2/5 of of mile in 3 minutes, How long will it take John to run 3 miles?

1 answer

(2/5) / 3 = 3/x

(2/5)x = 9

x = 9 / (2/5)

x = 9 * (5/2)

x = 45/2 = 22.5 minutes
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