1. A and B can do a work in 8 days, B and C can do the same work in 12 days. A, B and C together can finish it in 6 days. A and C together will do it in :
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By: guest on 01 Jun 2017 05.49 pm
(A + B + C)'s 1 day's work = 1 ; 6 (A + B)'s 1 day's work = 1 ; 8 (B + C)'s 1 day's work = 1 . 12 (A + C)'s 1 day's work = 2 x 1 - 1 + 1 6 8 12 = 1 - 5 3 24 = 3 24 = 1 . 8 So, A and C together will do the work in 8 days.