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    Question

    If the ratio of speeds of ‘X’, ‘Y’ and ‘Z’ is

    6:3:9 respectively, and ‘X’ takes 30 seconds to cover 360 metres, then find the time taken by ‘Z’ to cover 540 metres.
    A 25 secs Correct Answer Incorrect Answer
    B 30 secs Correct Answer Incorrect Answer
    C 36 secs Correct Answer Incorrect Answer
    D 18 secs Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    Speed of ‘X’ = (360 / 30) = 12 m/s

    Speed of ‘Z’ = 12 × (9/6) = 18 m/s

    Time taken by ‘Z’ to cover 540 metres = (540 / 18) = 30 seconds

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