SOLUTION: A and B can do a piece of work in 12 days , B and C can do it in 15 days and C and A can do it in 20 days . A alone can do it in
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Question 817743: A and B can do a piece of work in 12 days , B and C can do it in 15 days and C and A can do it in 20 days . A alone can do it in Answer by richwmiller(17219) (Show Source):
