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      Question

      Train M, β€˜x’ metres long crosses (x – 25) metres

      long platform in 15 seconds while train N having the length (x + 25) metres crosses the same platform in 20 seconds. If the speeds of both trains are same then find the value of β€˜x’.
      A 50 Correct Answer Incorrect Answer
      B 105 Correct Answer Incorrect Answer
      C 70 Correct Answer Incorrect Answer
      D 80 Correct Answer Incorrect Answer

      Solution

      Total distance travelled by train M = (2x – 25) m Total distance travelled by train N = (x + 25 + x – 25) = 2x m According to question, => (2x – 25)/15 = 2x/20 => 40x – 500 = 30x => 10x = 500 => x = 50 m

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