SOLUTION: the speed of a freight train is 12km/h slower than the speed of a passenger train the freight train travel 348km in the same time it takes the passenger train to travel 420 km find
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Question 763519: the speed of a freight train is 12km/h slower than the speed of a passenger train the freight train travel 348km in the same time it takes the passenger train to travel 420 km find the speed of the freight train Answer by Cromlix(4381) (Show Source):
You can put this solution on YOUR website! Passenger train = x
Freight train = x - 12
348km/x-12 = 420/x
Cross multiply
348x = 420(x - 12)
348x = 420x - 5040
-72x = -5040
-x = -70
x = 70km/hr
Passenger train's speed = 70 km/hr
Freight train's speed = 58 km/hr
Proof:
348/58 = 420/70
6 = 6
Hope this helps.
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