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

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): You can put this solution on YOUR website!
12/a+12/b=1,
15/b+15/c=1,
20/a+20/c=1
a = 30, b = 20, c = 60
a can do it alone in 30 days

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