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    Question

    Train M, ‘x’ metres long crosses (x – 30) metres

    long platform in 24 seconds while train N having the length (x + 30) metres crosses the same platform in 28 seconds. If the speeds of both trains are same then find the value of ‘x’.
    A 112 Correct Answer Incorrect Answer
    B 105 Correct Answer Incorrect Answer
    C 110 Correct Answer Incorrect Answer
    D 95 Correct Answer Incorrect Answer
    E 109 Correct Answer Incorrect Answer

    Solution

    Total distance travelled by train M = (2x – 30) m Total distance travelled by train N = (x + 30 + x – 30) = 2x m According to question, => (2x – 30)/24 = 2x/28 => 56x – 840 = 48x => 8x = 840 => x = 105 m

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