Pipes and Cisterns Set 2
We are here with Set of questions related to pipes and cisterns which are important for aptitude section of SSC CGL exams.
Q1. A pipe can fill a cistern in 6 hours. Due to a leak in its bottom, it is filled in 7 hours. When the cistern is full, in how much time will it be emptied by the leak?
(a) 42 hours
(b) 40 hours
(c) 43 hours
(d) 45 hours
(e) 48 hours
Q2. Three pipes A, B and C can fill a tank in 6 minutes, 8 minutes and 12 minutes, respectively. The pipe C is closed 6 minutes before the tank is filled. In what time will the tank be full?
(a) 4 min
(b) 6 min
(c) 5 min
(d) Data inadequate
(e) None of these
Q3. There are two taps to fill a tank while a third to empty it. When the third tap is closed, they can fill the tank in 10 minutes and 12 minutes, respectively. If all the three taps be opened, the tank is filled in 15 minutes. If the first two taps are closed, in what time can the third tap empty the tank when it is full?
(a) 8 min and 34 sec
(b) 9 min and 32 sec
(c) 7 min
(d) 6 min
(e) None of these
Q4. A cistern has two taps which fill it in 12 minutes and 15 minutes respectively. There is also a waste pipe in the cistern. When all the pipes are opened, the empty cistern is full in 20 minutes. How long will the waste pipe take to empty a full cistern?
(a) 12 minutes
(b) 10 minutes
(c) 8 minutes
(d) 16 minutes
(e) 20 minutes
Q5. Two taps can fill a tank in 20 minutes and 30 minutes respectively. There is an outlet tap at exactly half level of that rectangular tank which can pump out 100 litres of water per minute. If the outlet tap is open, then it takes 24 minutes to fill an empty tank. What is the volume of the tank?
(a) 1800 litres
(b) 1500 litres
(c) 1200 litres
(d) 2400 litres
(e) None of these
ANSWERS:
1 – A 2 – A 3 – A 4 – B 5 – A
