SOLUTION: a family traveled 135 miles by train then traveled 885 miles by plane. the speed of the plane was three times the speed of the train. if the total time of the trip was 6 hours, wha

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Question 1080092: a family traveled 135 miles by train then traveled 885 miles by plane. the speed of the plane was three times the speed of the train. if the total time of the trip was 6 hours, what was the speed of the train?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
           SPEEDS      TIME         DISTANCE

TRAIN          r       135/r          135

PLANE        3r        885/(3r)       885

Total                    6


135%2Fr%2B885%2F%283r%29=6
Simplify and solve.