A can do a piece of work in 10 days. He works at it for 4 days and then B finishes it in 9 days. In how many days can A and B together finish the work?

A can do a piece of work in 10 days. He works at it for 4 days and

1.	A can do a piece of work in 10 days. He works at it for 4 days and then B finishes it in 9 days. In how many days can A and B together finish the work?
A.	6 days
B.	8 days
C.	8 ½ days
D.	7 ½ days
Answer» B. 8 days

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A can do a piece of work in 10 days. He works at it for 4 days and then B finishes it in 9 days. In how many days can A and B together finish the work?

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