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      Question

      A train crosses a pole and a platform of length 360 metres

      in 6 seconds and 18 seconds, respectively. Find the length of train.
      A 140 metres Correct Answer Incorrect Answer
      B 160 metres Correct Answer Incorrect Answer
      C 180 metres Correct Answer Incorrect Answer
      D 200 metres Correct Answer Incorrect Answer
      E 220 metres Correct Answer Incorrect Answer

      Solution

      Let the speed of train be 'v' m/s.
      Length of train = '6v' metres

      So, (6v + 360) Γ· 18 = 'v'

      Or, 6v + 360 = 18v
      Or, 12v = 360
      So, 'v' = 30

      Therefore, length of the train = 6 Γ— 30 = 180 metres

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