A and B together can do a piece of work in 10 days and A alone can do it in 30 days. B alone can do the work in how many days?

A and B together can do a piece of work in 10 days and A alone can do

1.	A and B together can do a piece of work in 10 days and A alone can do it in 30 days. B alone can do the work in how many days?
A.	15
B.	12
C.	18
D.	24
Answer» B. 12

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A and B together can do a piece of work in 10 days and A alone can do it in 30 days. B alone can do the work in how many days?

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