20 hrs

23 hrs

30 hrs

21 hrs

**Two pipes can fill a cistern in 14 hours and 16 hours respectively. The pipes are opened simultaneously…****Two pipes A and B can fill a tank in 36 min. and 45 min. respectively. A water pipe C can empty the…****Two pipes can fill a tank in 10hours and 12 hours respectively while a third, pipe empties the full…****Two pipes A and B can fill a tank in 36 bours and 46 bours respectively. If both the pipes are opened…****An electric pump can fill a tank in 3 hours. Because of a leak in ,the tank it took 3(1/2) hours to…****A cistern has two taps which fill it in 12 minutes and 15minutes respectively. There is also a waste…**