Question 403007: a boy rides a bike at 8 mph. if one hour later the father leaves and catches up to him in 15 minutes, how fast did the father go? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! a boy rides a bike at 8 mph. if one hour later the father leaves and catches up to him in 15 minutes, how fast did the father go?
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Boy DATA:
rate = 8 mph ; time = (5/4) hrs ; distance = rt = (8)(5/4) = 10 miles
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Equation:
Let father's rate be "r":
rate = distance/time
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father's rate = 10/(1/4)mph = 40 mph
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Cheers,
Stan H.
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