A can do 2 / 3rd of a job in 18 days and B can do 1 / 3rd of the job in 18 days. If they work on it together, in how many days can they do half of the job?

A can do 2 / 3rd of a job in 18 days and B can do 1 / 3rd of the job i

1.	A can do 2 / 3rd of a job in 18 days and B can do 1 / 3rd of the job in 18 days. If they work on it together, in how many days can they do half of the job?
A.	12
B.	15
C.	9
D.	18
Answer» D. 18

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A can do 2 / 3rd of a job in 18 days and B can do 1 / 3rd of the job in 18 days. If they work on it together, in how many days can they do half of the job?

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