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Mary decreased her time in the mile walk from 30 minutes to 24 minutes.What was the percent of decrease

Mary decreased her time in the mile walk from 30 minutes to 24 minutes.What was the percent of decrease
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Mary decreased her time in the mile walk from 30 minutes to 24 minutes.What was the percent of decrease

User Totothegreat
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That would be a 20% decrease in time to walk a mile.
User Pampeho
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