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      Question

      A train running with a speed of 63 km/hr can cross a

      pole in 19 seconds and a platform in 27 seconds. Find the length of the platform.
      A 140 metres Correct Answer Incorrect Answer
      B 100 metres Correct Answer Incorrect Answer
      C 150 metres Correct Answer Incorrect Answer
      D 180 metres Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Speed of the train = 63 × (5/18) = 17.5 m/sec Length of the train = 17.5 × 19 = 332.5 metres Let the length of the platform be ‘x’ metres Therefore, 332.5 + x = 17.5 × 27 Or, x = 472.5 – 332.5 = 140 metres

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