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      Question

      A train running at 90 km/h takes 18 seconds to pass a pole.

      Find the approximate time required for the train to cross a platform that is 0.8 times the length of the train.
      A 45 secs Correct Answer Incorrect Answer
      B 75 secs Correct Answer Incorrect Answer
      C 12 secs Correct Answer Incorrect Answer
      D 32 secs Correct Answer Incorrect Answer

      Solution

      ATQ,
      Length of the train = (90 ร— (5/18) ร— 18) = 450 metres
      Length of the platform = (450 ร— 0.8) = 360 metres
      Time taken by train to cross the platform = [(450 + 360) / (90 ร— (5/18))]= (810 / 25) = 32.4 seconds

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