Asked by aurora
how far can a boy ride his bicycle if he rides away at 10 km per hour and returns at 9 km per hour? the entire trip takes 9.5.
Answers
Answered by
oobleck
time = distance/speed, so if the distance is x,
x/10 + x/9 = 9.5
now just find x
x/10 + x/9 = 9.5
now just find x
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