Three inlets P, Q and R take 6 hours to fill a cistern. After being open for 2 hours together, inlet R develops a fault and has to be closed. P and Q fill the remaining cistern in 7 hours. How much time would R take to fill the cistern alone?

Three inlets P, Q and R take 6 hours to fill a cistern. After being op

1.	Three inlets P, Q and R take 6 hours to fill a cistern. After being open for 2 hours together, inlet R develops a fault and has to be closed. P and Q fill the remaining cistern in 7 hours. How much time would R take to fill the cistern alone?
A.	10 hours
B.	12 hours
C.	14 hours
D.	16 hours
Answer» D. 16 hours

Discussion

No Comment Found

Related MCQs

Two pipes A and B can fill a cistern in 37 minutes and 45 minutes respectively. Both pipes are opened. The cistern will be filled in just half an hour, if the B is turned off after:
How long will it take to empty the tank if both the inlet pipe A and the outlet pipe B are opened simultaneously? I. A can fill the tank in 16 minutes. II. B can empty the full tank in 8 minutes.
If both the pipes are opened, how many hours will be taken to fill the tank? I. The capacity of the tank is 400 litres. II. The pipe A fills the tank in 4 hours. III. The pipe B fills the tank in 6 hours.
How much time will the leak take to empty the full cistern? I. The cistern is normally filled in 9 hours. II. It takes one hour more than the usual time to fill the cistern because of la leak in the bottom.
A pump can fill a tank with water in 2 hours. Because of a leak, it took 2 hours to fill the tank. The leak can drain all the water of the tank in:
Two pipes A and B can fill a tank with water in 30 minutes and 45 minutes respectively. The third pipe C can empty the tank in 36 minutes. First A and B are opened. After 12 minutes C is opened. Total time ( in minutes ) in which the tank will be filled up is -
Pipe A can fill the tank in 8 hours and pipe B can fill it in 12 hours. If pipe A is opened at 7:00 AM and pipe B is opened at 9:00 AM, then at what time will the tank be full ?
Pipe A can fill a tank in 4 hours and pipe B can fill it 6 hours. If they are opened on alternate hours and if pipe A is opened first then in how many hours, the tank shall be full ?
Having the same capacity 9 taps fill up a water tank in 20 minutes. How many taps of the same capacity are required to fill up the same water tank in 15 minutes ?
Three taps A, B, C can fill an overhead tank in 4, 6 and 12 hours respectively. How long would the three taps take to fill the tank if all of them are opened together ?

Three inlets P, Q and R take 6 hours to fill a cistern. After being open for 2 hours together, inlet R develops a fault and has to be closed. P and Q fill the remaining cistern in 7 hours. How much time would R take to fill the cistern alone?

Discussion

No Comment Found

Related MCQs

Reply to Comment