SOLUTION: suppose a train travels 20 miles faster than a car. If the car covers 90 miles in the same time a train covers 120 miles what is the speed of each?

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Question 443913: suppose a train travels 20 miles faster than a car. If the car covers 90 miles in the same time a train covers 120 miles what is the speed of each?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

train travels 20 miles faster than a car.

Let x and (x+20) represent speed of car and train respectively

Question states***  Note: D = r*t OR t= D/r

+90%2Fx+=+120%2F%28x%2B20%29  |Cross Multiplying for solving

  120c = 90(x+20)

   30x = 180

     x = 60mph, speed of car.  The  speed pf the train is 80mph  (60mph+20mph)



CHECKING our Answer***

 90/60 = 120/80 = 3/2









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