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3 years ago

13

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

nce from her home to school?

1 answer:

max2010maxim [7]3 years ago

7 0

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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