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11. A and B together finish a work in 30 days. They worked at it for 20 days and then left remaining work was done by A alone in 20 more days. In how many days can A alone do it |
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Answer» (A + B)'s 20 day's work = ( (1/30) x 20 ) = 2/3Remaining work = ( 1 - 2/3 ) = 1 /3Now, 1 /3 work is DONE by A in 20 days.Therefore, the whole work will be done by A in (20 x 3) = 60 days.Thanks.Like FOLLOW and Rate.Teacher. |
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