A and B can complete a work in 20 days and 30 days respectively. A works full time but B works half time. In how many days the entire work is to be completed?

A and B can complete a work in 20 days and 30 days respectively. A wor

1.	A and B can complete a work in 20 days and 30 days respectively. A works full time but B works half time. In how many days the entire work is to be completed?
A.	9 days
B.	15 days
C.	12 days
D.	10 days
Answer» C. 12 days

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A and B can complete a work in 20 days and 30 days respectively. A works full time but B works half time. In how many days the entire work is to be completed?

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