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Acan do a work in 21 days. B is 40%more good as A. In how much time Bcomplete the work?(A) 10(C) 24(B) 15(D) 28 |
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Answer» one day work of A = 1/21B is 40 % more efficient than A which means that A will take 40% more days than B because efficiency and number of days are inversely proportional to each other. => 21 is 40% more than B’s days. => 21 = (140/100)*B’s days => B’s days = 21*(100/140) = 15 days |
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