A can do a piece of work in 12 days. When he had worked for 3 days. B joined him. If they complete the work in 3 more days, in how many days can B alone finish the work ?

A can do a piece of work in 12 days. When he had worked for 3 days. B

1.	A can do a piece of work in 12 days. When he had worked for 3 days. B joined him. If they complete the work in 3 more days, in how many days can B alone finish the work ?
A.	days
B.	2 days
C.	days
D.	days
Answer» B. 2 days