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10-05-2019
Mathematics

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Maria drives to school in 20 minutes. She drives home in 24 minutes. What was her average driving speed in terms of d, the distance from her home to school?

Respuesta :

10-05-2019

Speed is distance/time so

[(d/20)+(d/24)]/2= 24d+20d/24•20•2=44d/20•24•2=22d/20•24=11d/240

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