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A runs 1 times as fast as B. If A gives B a start of 80 m, how far must the winning post be so that A and B might reach it at the same time? ?->(Show Answer!)
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1. A runs 1 times as fast as B. If A gives B a start of 80 m, how far must the winning post be so that A and B might reach it at the same time?





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  • By: guest on 01 Jun 2017 05.48 pm
    Ratio of the speeds of A and B = 5 : 1 = 5 : 3. 3 Thus, in race of 5 m, A gains 2 m over B. 2 m are gained by A in a race of 5 m. 80 m will be gained by A in race of 5 x 80 m = 200 m. 2 Winning post is 200 m away from the starting point.
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