SOLUTION: John runs 16 miles each Sunday, if he doubles his usual speed, he can run the 16 miles in two hours less than his usual time. what is his usual speed?
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Question 911283: John runs 16 miles each Sunday, if he doubles his usual speed, he can run the 16 miles in two hours less than his usual time. what is his usual speed?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
r the usual speed
|Multiplying thru by 2r so as all denominators = 1
32 - 16 = 4r
16 = r
4mph = r, the usual speed
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