A and B can do a work in 9 days and 12 days respectively. If they work on alternate days starting with A, then in how many days will the work be compl...
Question
A and B can do a work in 9 days and 12 days respectively. If they work on alternate days starting with A, then in how many days will the work be completed?
Options
A.
36 days
B.
10 days
C. 
D.
13 days