Diptesh and Tushar working separately can do a piece of work in 9 days and 12 days respectively. If they work for a day alternately, Diptesh beginning in how many days the work will be completed?
Q. Diptesh and Tushar working separately can do a piece of work in 9 days and 12 days respectively. If they work for a day alternately, Diptesh beginning in how many days the work will be completed? (A) 9 (B) 10 (C) 11 (D) 12 Answer: 11