A and B working separately can do a piece of work in 9 and 15 days respectively. If they work for a day alternately, with A beginning, then the work will be complete in :
[A] 9 days
[B] 10 days
[C] 11 days
[D] 12 days


Kindly help us to keep GKToday updated and error free. Use this form to report error or outdated information in questions. We shall rectify asap...