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      Question

      Two trains, A and B, are moving in opposite directions

      at speeds of 45 km/h and 60 km/h, respectively. The lengths of the trains are 120 meters and 150 meters. How much time will they take to cross each other?
      A 8 seconds Correct Answer Incorrect Answer
      B 9.36 seconds Correct Answer Incorrect Answer
      C 12 seconds Correct Answer Incorrect Answer
      D 14.67 seconds Correct Answer Incorrect Answer

      Solution

      Relative speed = 45 + 60 = 105 km/h = 105 * 1000 / 3600 m/s = 175/6 m/s. Total distance = 120 + 150 = 270 meters. Time taken = 270 / (175/6) = 9.26 seconds┬а Correct Option: b)┬а

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