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    Question

    A train crosses two platforms of length 1000 m and 600 m

    in 80 seconds and 60 seconds, respectively. What is the length of the train?
    A 720 m Correct Answer Incorrect Answer
    B 600 m Correct Answer Incorrect Answer
    C 540 m Correct Answer Incorrect Answer
    D 400 m Correct Answer Incorrect Answer

    Solution

    Let the length of the train be x m. As we know, Speed = (x + 1000)/80 ---(1) Speed = (x + 600)/60 ---(2) From equation (1) and equation (2) (x + 1000)/80 = (x + 600)/60 3 (x + 1000) = 4 (x + 600) 3x + 3000 = 4x + 2400 4x-3x = 3000-2400   x = 600 The length of the train is 600 m.

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