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    Question

    A train overtakes two persons walking along a railway

    track. The first one walks at 3.2 Km/h. The other one walks at 4.5 Km/h. The train needs 5.5 and 5.6 second respectively to overtake them. What is the speed of the train if both the persons are walking in the same direction as the train?
    A 81 km/h Correct Answer Incorrect Answer
    B 80 km/h Correct Answer Incorrect Answer
    C 76 km/h Correct Answer Incorrect Answer
    D 71 km/h Correct Answer Incorrect Answer
    E none of these Correct Answer Incorrect Answer

    Solution

    Let the speed of train be x km/h
    As both the persons are walking in the same direction of train.
    so, (x- 3.2) x 5.5 = (x-4.5)x5.6
    => 0.1x = 7.6
    => x = 76 km/h

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