A is thrice as efficient as B and takes 10 days less to do a piece of work than B takes to do the same work. In how many days, B alone can finish the whole work?

A is thrice as efficient as B and takes 10 days less to do a piece of

1.	A is thrice as efficient as B and takes 10 days less to do a piece of work than B takes to do the same work. In how many days, B alone can finish the whole work?
A.	15 days
B.	10 days
C.	9 days
D.	8 days
E.	7 days
Answer» B. 10 days

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A is thrice as efficient as B and takes 10 days less to do a piece of work than B takes to do the same work. In how many days, B alone can finish the whole work?

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