Question
A 120-meter-long train crosses a pole in 6 seconds. How
much time will it take to cross a 180-meter-long platform?Solution
Speed of the train = Length of the train / Time taken to cross the pole = 120/6 = 20 m/s. Total distance to be covered when crossing the platform = Length of train + Length of platform = 120 + 180 = 300 meters. Time taken = Distance / Speed = 300/20 = 15 seconds. Correct Option: b
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