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      Question

      A train travelling with a speed of 90 km/h can cross a

      pole in 8 seconds. Find the time taken by the train to cross a 300 metres long platform if the speed of train is increased by 25%.
      A 15 seconds Correct Answer Incorrect Answer
      B 22.5 seconds Correct Answer Incorrect Answer
      C 14 seconds Correct Answer Incorrect Answer
      D 16 seconds Correct Answer Incorrect Answer

      Solution

      Speed of train = 90 Γ— 5/18 = 25 m/s Length of train = 25 Γ— 8 = 200 metres Desired time = (300 + 200)/(1.25 Γ— 25) = 16 seconds

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