SOLUTION: Harry traveled 15 miles on the bus and then another 72 miles on a train. If the train was 18 miles per hour faster than the bus and the total trip took 2 hours, then what was the a

Question 1102097: Harry traveled 15 miles on the bus and then another 72 miles on a train. If the train was 18 miles per hour faster than the bus and the total trip took 2 hours, then what was the average speed of the train?
Answer by josgarithmetic(39800) (Show Source): You can put this solution on YOUR website!

             SPEED      TIME          DISTANCE

BUS          r+18              15

TRAIN         r                     72

Total                    2

Solve the equation for r:

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