SOLUTION: Jennifer rode her bike to the store at a rate of 15 mi/h. She rode back home at a rate of 10 mi/h. How far is it to the store if the round trip takes 1 hour?
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Question 960253: Jennifer rode her bike to the store at a rate of 15 mi/h. She rode back home at a rate of 10 mi/h. How far is it to the store if the round trip takes 1 hour? Found 2 solutions by Alan3354, harpazo:Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! Jennifer rode her bike to the store at a rate of 15 mi/h. She rode back home at a rate of 10 mi/h. How far is it to the store if the round trip takes 1 hour?
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Avg speed of a round trip is
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2*r1*r2/(r1 + r2)
= 2*15*10/(25)
= 12 mi/hr
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RT distance = 12*1 = 12 miles
Distance to the store = 6 miles
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