A can do a piece of work in 20 days and B can do it in 22 1/2 days. And both work together for 6 days and the remaining work has been completed by C in 26 days. In how many days they will complete the work, if all three work together?

A can do a piece of work in 20 days and B can do it in 22 1/2 days. An

1.	A can do a piece of work in 20 days and B can do it in 22 1/2 days. And both work together for 6 days and the remaining work has been completed by C in 26 days. In how many days they will complete the work, if all three work together?
A.	8 days
B.	9 days
C.	12 days
D.	10 days
Answer» C. 12 days

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A can do a piece of work in 20 days and B can do it in 22 1/2 days. And both work together for 6 days and the remaining work has been completed by C in 26 days. In how many days they will complete the work, if all three work together?

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