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Q : 12 pumps working 6 hours a day can empty a completely filled reservoir in 15 days. How many such pumps working 9 hours a day will empty the same reservoir in 12 days?
(A) 15
(B) 9
(C) 10
(D) 12
A tap takes 36 hours extra to fill a tank due to leakage equivalent to half of its inflow. The inflow can fill the tank in how many hours?
(A) 36 hours
(B) 24 hours
(C) 30 hours
(D) 18 hours
A water reservoir has two inlets and one outlet. Through the inlet it can be filled in 3 hours and 3 hours 45 minutes respectively. It can be emptied completely in 1 hour by the outlet. If the two inlets are opened at 01 : 00 pm and 02 : 00 pm respectively and the outlet at 03 : 00 pm then it will be emptied at :
(A) 05 : 55 pm
(B) 05 : 00 pm
(C) 05 : 20 pm
(D) 05 : 30 pm
A tap can fill a Tank in 16 hours. Due to a hole in its base it I filled in 24 hours, If tank is full then in how many hours it will be empty through the hole.
(A) 40
(B) 36
(C) 45
(D) 48
A tap can fill a Tank in 16 hours. Due to a hole in its base it is filled in 24 hours, If tank is full then in how many hours it will be empty through the hole.
(A) 40
(B) 36
(C) 45
(D) 48
Three pipes A, B and C can fill a cistern in 10 hours, 12 hours and 15 hours respectively. First A was opened. After 2 hour, B was opened and after 4 hours from the start of A, C was also opened. Find the time in which the cistern is just full.
(A) 2 hours
(B) 4 hours
(C) 2 hours 52 min
(D) 5 hours 44 min.
(E) None of these
Pipe A can fill a tank in 6 hours. Pipe B can fill the same tank in 10 hours – pipe A, B, C together can fill the same tank in 12 hours. In how many hours pipe C can fill the tank alone?
(A)
(B) 4 hours
(C) 15 hours
(D) Not possible
Tank is normally filled in 8 hours but takes 2 hours longer to fill because of a leak in its bottom. If the cistern is full, in how many hours will the leak empty it?
(A) 45
(B) 50
(C) 40
(D) 35
Two pipes P and Q can fill a cistern in 36 and 48 minutes respectively. Both pipes are opened together, after how many minutes should Q be turned off,so that the cistern be fill in 24 minutes?
(A) 6 min
(B) 16 min
(C) 10 min
(D) 12 min
A tap can fill the tank in 8 hours and another can empty it in 16 hours. If both the taps are opened simultaneously, the time (in hours) to fill the tank is__.
(A) 18 hours
(B) 16 hours
(C) 8 hours
(D) 10 hours
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