Question
A train 120 m long crosses another train 150 m long,
coming from the opposite direction, in 10 seconds. If the speed of the first train is 54 km/h, find the speed of the second train.Solution
Relative speed = (120 + 150)/10 = 27 m/s = 97.2 km/h. Speed of second train = 97.2 - 54 = 43.2 km/h. Correct option: a
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