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    Question

    Train M, ‘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 ‘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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