A can do a piece of work in 40 days. He works on it for 5 days and then B completes it in 21 days. How long will A and B together take to complete the work?

A can do a piece of work in 40 days. He works on it for 5 days and the

1.	A can do a piece of work in 40 days. He works on it for 5 days and then B completes it in 21 days. How long will A and B together take to complete the work?
A.	10 days
B.	15 days
C.	20 days
D.	25 days
Answer» C. 20 days

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A can do a piece of work in 40 days. He works on it for 5 days and then B completes it in 21 days. How long will A and B together take to complete the work?

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