A and B can do a job together in 12 days. A is 2 time as efficient as B. In how many days can B alone complete the work ?

A and B can do a job together in 12 days. A is 2 time as efficient as

1.	A and B can do a job together in 12 days. A is 2 time as efficient as B. In how many days can B alone complete the work ?
A.	36
B.	12
C.	18
D.	9
Answer» B. 12

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A and B can do a job together in 12 days. A is 2 time as efficient as B. In how many days can B alone complete the work ?

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