A and B working separately can do a piece of work in 9 and 12 days respectively. If they work for a day alternately with A beginning, the work would be completed in

A and B working separately can do a piece of work in 9 and 12 days res

1.	A and B working separately can do a piece of work in 9 and 12 days respectively. If they work for a day alternately with A beginning, the work would be completed in
A.	10 2/3 days
B.	10 1/2 days
C.	10 1/4 days
D.	10 1/3 days
Answer» D. 10 1/3 days