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      Question

      A train 175 m long running at 54 km/hr takes 40 seconds

      to cross a bridge. The length of the bridge is
      A 300 metre Correct Answer Incorrect Answer
      B 425 metre Correct Answer Incorrect Answer
      C 625 metre Correct Answer Incorrect Answer
      D 350 metre Correct Answer Incorrect Answer

      Solution

      Speed of train = 54 km/hr = 54 Γ— (5/18) = 15 m / sec If the length of bridge be x metre, then β‡’ 15 = (175 + x)/40 β‡’ 175 + x = 600 β‡’ x = 600 – 175 = 425 metre

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