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  1. Train P crosses a pole in 30 seconds and train Q crosses the same pole in one minute and 15 seconds. The length of train P is three-fourths the length of train Q. What is the ratio of the speed of train P to that of train Q?
    2. A.
    15 : 8
    B.
    8 : 15
    C.
    5 : 3
    D.
    3 : 5
    E.
    None of these.

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    Answer : Option A

    Explanation :

    Given that train P crosses a pole in 30 seconds and train Q crosses the same pole in one minute and 15 seconds.

    Let the length of train P be LP and that of train Q be LQ

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