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      Question

      Two trains, one 390 metres and the other 250 metres long

      are running in opposite directions on parallel tracks, at the speed of 78 km/hr and 66 km/hr respectively. How much time will they take to cross each other? 
      A 36 seconds Correct Answer Incorrect Answer
      B 16 seconds Correct Answer Incorrect Answer
      C 24 seconds Correct Answer Incorrect Answer
      D 30 seconds Correct Answer Incorrect Answer

      Solution

      The correct answer is B

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