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

Algebra ->  Customizable Word Problem Solvers  -> Travel -> 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      Log On

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