SOLUTION: A train averages a speed of 90 miles per hour across the plains and 37.5 miles per hour through the mountains. If a trip of 300 miles took 3 hour and 48 minutes, how much of it was

Question 1014644: A train averages a speed of 90 miles per hour across the plains and 37.5 miles per hour through the mountains. If a trip of 300 miles took 3 hour and 48 minutes, how much of it was through the mountains?
Answer by josgarithmetic(39799) (Show Source): You can put this solution on YOUR website!
This should be enough for you to understand what to do to find x and y times, and the distance parts.

               rate          time         distance
PLAINS          90            x            90x
MOUNTAINS       37.5          y            37.5y
Total                                 300

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