digitalmixer1 digitalmixer1

12-11-2017
Mathematics

contestada

if Mary drove 525 miles in 7 hours at an average speed of 70 miles per hour how much faster would her average speed need to be to make the trip in 5 hours

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jorel1380 jorel1380

14-11-2017

525/7=75 mph
525/5=105 mph
Mary would need to drive 30 mph faster to make the same trip in 5 hours
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