Question
A train running at a speed of 36 kmph crosses an electric pole in 12 seconds. In how much time will it cross a 350 m long platform?
Answer: Option D
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Let the length of the train be x m.
When a train crosses an electric pole, the distance covered is its own length.So, x = 12 * 36 * 5 /18 m = 120 m.Time taken to cross the platform = (120 +350)/ 36 * 5/18 = 47 min.
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