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Discussion :: Races and Games

  1. In a 500 m race, the ratio of the speeds of two contestants A and B is 3 : 4. A has a start of 140 m. Then, A wins by:

  2. A.

    60 m

    B.

    40 m

    C.

    20 m

    D.

    10 m

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    Workspace

    Answer : Option C

    Explanation :

    To reach the winning post A will have to cover a distance of (500 - 140)m, i.e., 360 m.

     

    While A covers 3 m, B covers 4 m.

     

    While A covers 360 m, B covers [\( \frac { 4 } { 3 } \) x 360]m =480 m

     

    Thus, when A reaches the winning post, B covers 480 m and therefore remains 20 m behind.

     

     A wins by 20 m.


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