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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: ?->(Show Answer!)
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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:





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  • By: guest on 01 Jun 2017 05.48 pm
    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 4 x 360 m = 480 m. 3 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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