Question

Last week, Jake walked 1 mile in 15 minutes. This week, he walked 1 mile in 12 minutes.

What is the percent of decrease in Jake's time to walk a mile?

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Answer 1

A 20% decrease. 12/15 is 80%, so a 20% decrease from 100%.

Answer 2

His time to walk a mile decreased by 20%. So it decreased by 20%. Hope i helped