Subject

    Quantitative Aptitude

    Topic

    Speed & Distance

    In a 500 m race, the ratio of the speeds of two contestants A and B is 3 : A has a start of 140 m. Then, A wins by:

    ক)
    60 m
    খ)
    40 m
    গ)
    20 m
    ঘ)
    10 m

    Explanation

    To reach the winning post A will have to cover a distance of (500-140)m, i.e., 360m While A covers 3 m, B covers 4 m. While A covers 360m, B covers (4/3×360)m =480 m. Thus, When A reaches the winning post, B covers 480 m and therefore remains 20 m behind. So, A wins by 20 m.

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