Dear Students, SSC has released the notification for CGL 2017. This time again the competition is going to be very stiff. Questions from Quant are asked in Tier-1 and Tier-II as well. Hence, you need to focus on this subject more. The only trick to master Quant is “practice‘. So, Practice daily. We are providing topic-wise quant quizzes, solve, learn, succeed.
Q1. Two pipes A and B can fill a tank in 24 minutes and 32 minutes respectively. If both the pipes are opened simultaneously, after how much time should B be closed so that the tank is full in 15 minutes?
(a) 12 min.
(b) 4 min.
(c) 6 min.
(d) 8 min.
Q2. If two pipes function simultaneously the reservoir is filled in 12 hrs. One pipe fills the reservoir 10 hours faster than the other. How many hours does the faster pipe take to fill the reservoir?
(a) 20 hrs
(b) 30 hrs
(c) 35 hrs
(d) 45 hrs
Q3. Three pipes A, B and C can fill a cistern in 6 hrs. After working together for 4 hours, C is closed and A and B fill the cistern in 4 hrs. Then find the time in which the cistern can be filled by pipe C.
(a) 6 hrs
(b) 12 hrs
(c) 14 hrs
(d) 20 hrs
Q4. A tank has a leak which would empty it in 8 hrs. A tap is turned on which admits 6 litres a minute into the tank, and it is now emptied in 12 hrs. How many litres does the tank hold?
(a) 8260 litres
(b) 8450 litres
(c) 8640 litres
(d) 8660 litres
Q5. A tank is normally filled in 8 hours but takes 2 hrs longer to fill because of a leak in its bottom. If the cistern is full, in how many hrs will the leak empty half of the tank.
(a) 20 hrs
(b) 45 hrs
(c) 50 hrs
(d) 55 hrs
Q6. A pipe can fill a tank in 12 minutes and another pipe in 15 minutes, but a third pipe can empty it in 6 minutes. The first two pipes are kept open for 6 minutes in the beginning and then the third pipe is also opened. In what time is the cistern emptied?
(a) 42 minutes
(b) 54 minutes
(c) 48 minutes
(d) Can’t be determined
Q9. A tank can be filled by two pipes in 20 minutes and 30 minutes respectively. When the tank was empty, the two pipes were opened. After some time, the first pipe was closed and the tank was filled in 20 minutes. After how much time from the start, was the first pipe closed?
(a) 5 minutes
(b) 8 minutes
(c) 20/3 minutes
(d) 12 minutes
Q10. A tank can be filled with water by two pipes A and B together in 36 minutes. If the pipe B was closed after 30 minutes, the tank is filled in 40 minutes. The pipe B can alone fill the tank in :
(a) 45 minutes
(b) 60 minutes
(c) 75 minutes
(d) 90 minutes
Q14. Three pipes A, B and C can fill a cistern in 6 hours. After working at it together for 2 hours, C is closed and A and B can fill the remaining part in 7 hours. The time taken by C alone to fill the cistern is:
(a) 10 hrs
(b) 12 hrs
(c) 14 hrs
(d) 16 hrs
Q15. Two taps can separately fill a cistern in 10 minutes and 15 minutes respectively and when the waste pipe is open, they can fill it in 18 minutes. The waste pipe can empty the full cistern in:
(a) 3 minutes
(b) 5 minutes
(c) 7 minutes
(d) 9 minutes
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