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    Question

    Train M, ‘x’ metres long crosses (x – 34) metres

    long platform in 15 seconds while train N having the length (x + 34) metres crosses the same platform in 20 seconds. If the speeds of both trains are same then find the value of ‘x’.
    A 75 Correct Answer Incorrect Answer
    B 68 Correct Answer Incorrect Answer
    C 100 Correct Answer Incorrect Answer
    D 95 Correct Answer Incorrect Answer
    E 80 Correct Answer Incorrect Answer

    Solution

    Total distance travelled by train M = (2x – 34) m Total distance travelled by train N = (x + 34 + x – 34) = 2x m According to question, => (2x – 34)/15 = 2x/20 => 40x – 680 = 30x => 10x = 680 => x = 68 m

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