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      Question

      Two trains, 148 m and 152 m long, are running towards

      each other on parallel lines at 62 km/h and 46km/h, respectively. In what time will they be clear of each other from the moment they meet?
      A 10 sec Correct Answer Incorrect Answer
      B 5 sec Correct Answer Incorrect Answer
      C 15 sec Correct Answer Incorrect Answer
      D 20 sec Correct Answer Incorrect Answer

      Solution

      Given: Lengths = 148 m and 152 m ⇒ Total = 148 + 152 = 300 m Speeds = 62 km/h and 46 km/h Relative speed (opposite directions) = 62 + 46 = 108 km/h Convert to m/s: 108 × (5/18) = 30 m/s Time = Distance ÷ Speed = 300 ÷ 30 = 10 seconds

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