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      Question

      Two trains of same length are running in parallel tracks

      in the same direction with speed 65 km/hr and 95 km/hr respectively. The latter completely crosses the former in 30 seconds. Find the length of each train (in m).
      A 250 m Correct Answer Incorrect Answer
      B 100 m Correct Answer Incorrect Answer
      C 125 m Correct Answer Incorrect Answer
      D 200 m Correct Answer Incorrect Answer

      Solution

      When two trains cross each other, they cover distance equal to the sum of their lengths with relative speed. ┬аLet's take length of each train = x So, total length of both trains = 2x Relative speed = (95 тАУ 65) ├Ч (5/18) = 25/3 m/sec. тИ┤ Total length = Time ├Ч Relative speed тЗТ ┬а2x = (30 ├Ч 25)/3 тЗТ ┬аx = 125 m

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