Question
A can complete a piece of work in 20 days. B can
complete the same work in 36 days. If A and B work together, then the number of days required to complete the work is:Solution
AB 2036 180(T.W) 95Efficiency Total days in complete work=180/9+5 =180/14. =12(12/14) =12(6/7)days.
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