Question
Two trains of equal length are running on parallel lines
in the same direction at 36 km/h and 54 km/h. The faster train passes the slower train in 48 seconds. The length of each train (in m) is:Solution
Let the length of the train be x. Time taken to overtake = (x + x)/ (54-36) 2x/18 = 48/3600 x = 12/100 km  = 12/100 × 1000 = 120 m The length of each train is 120 m. Â
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