A can do a piece of work in 20 days which B can do in 12 days. B worked at it for 9 days. A can finish the remaining work in

A can do a piece of work in 20 days which B can do in 12 days. B worke

1.	A can do a piece of work in 20 days which B can do in 12 days. B worked at it for 9 days. A can finish the remaining work in
A.	5 days
B.	7 days
C.	11 days
D.	3 days
Answer» B. 7 days

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A can do a piece of work in 20 days which B can do in 12 days. B worked at it for 9 days. A can finish the remaining work in

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