An outlet pipe can empty a cistern in 3 hours. In what time will the empty `2/3` part of the cistern? `3\ hou r s` b. `5\ hou r s` c. `2\ hou r s` d. `4\ hou r s`

An outlet pipe can empty a cistern in 5h . In what time will the pipe empty 2/5 part of cistern ?

An outlet pipe can empty a cistern in 30 min, then what part of the cistern will it empty in 1 min?

A can do a piece of work in 4 hours, B and C together in 3 hours, and A and C together in 2 hours. How long will B alone take to do it? 8 hou r s b. 10 hou r s c. 12 hou r s d. 24 hou r s

Two pipes A and B together can fill a cistern in 4 hours. Had they been opened separately, then B would have taken 6 hours more than A to fill the cistern. How much time will be taken by A alone to fill the cistern? 1 h r s b. 2 h r s c. 6 h r s d. 8 h r s

A car covers a distanced of 432 km at the speed of 48 km/hr. In how many hours will the car cover this distance? 6 hou r s b. 7 hou r s c. 9 hou r s d. 12 hou r s e. none of these

Reena, Aastha and Shloka can independently complete a piece of work in 6 hours, 4 hours and 12 hours respectively. If they work together, how much time will they take to complete that piece of work? 2 hou r s b. 5 hou r s c. 6 hou r s d. hou r s e. none of these

Pipes A and B can fill a tank in 20 hours and 30 hours respectively and pipe C can empty the full tank in 40 all the pipes are opened together, how 4oc-lii much time will he needed to make the tank full? 10 3/7hou r s b. 12 4/5hou r s c. 17 1/7hou r s d. 19 1/4hou r s

A tap can completely fill a water tank in 8 hours. The water tank has a hole in it through which the water leak, out. The leakage will cause the full water tank to get mph it, 12 hours. How much time will it take for the tap to fill the tank completely with the hole? 16 hou r s b. 18 hou r s c. 24 hou r s d. none of these

A cistern has two pipes. One can till it with water in 8 hours and other can empty it in 5 hours. In how many hours will the cistern be emptied if both the pipes are opened together when 3/4 of the cistern is already full of water? 3 1/3hou r s b. 6 hou r s c. 10 hou r s d. 13 1/3hou r s

A takes 2 hours more than B to walk d km, but /it A doubles his speed, then he can make it in 1 hour less than B. How much time does B require for walking d k m ? d/2 hou r s b. 3 hou r s c. 4 hou r s d. (2d)/3hou r s