SOLUTION: it took Joseph 6 hours to drive to the tournament. he took the same route back, but this time it took 7 hours. if Joseph drove 9mph faster on his way to the tournament, how fast di
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Question 908360: it took Joseph 6 hours to drive to the tournament. he took the same route back, but this time it took 7 hours. if Joseph drove 9mph faster on his way to the tournament, how fast did he drive on his way back?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
r speed on way back
D = rt (the same going and coming back)
6(r+9mph) = 7r
54mph = r, speed on way back
checking
6(63) = 7(54) = 378mi
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