Pipes and Cisterns Quiz 1 February 7, 2012 by kumar 1. Three tapes are opened together in order to fill a cistern in 15 minutes.one of the taps can fill it in 12 minutes and another in 18 minutes.How does the third tap work?A. It fills the cistern in 12 minutes.B. It empties the cistern in 60 minutesC. It fills the cistern in 60 minutesD. It empties the cistern in 12 minutes 2. A cistern can be filled by a tap in 18 hours while it can be emptied by another tap in 27 hours.If both the taps are opened simultaneously,then after how much time will the cistern get filled?A. 54 hrsB. 65 hrsC. 43 hrsD. 34 hrs 3. Three pipes 1,2,3 can fill a cistern in 2,3 and 4 hours respectively.In how many hours 3 pipes together will fill the cisternA. 2.3B. 4.3C. 1.8D. 1.5 3. Two taps X and Y can fill a tank in 3 and 4 hours respectively.while third tap Z can empty the tank in 5 hours.In starting ,all the three tapes opened.if the tap Z may closed after 2 hours,then what's the time taken in the filling of tank by tapsA. 2/5 hrsB. 3/4 hrsC. 12/5 hrsD. 7/8 hrs 5. The tap can fill a cistern with water in 4 hours,because of leak,it took 4 1/2 hrs to fill the cistern.the leak can drain all the water of the tank inA. 24 hrsB. 36 hrsC. 46 hrsD. 54 hrs 6. Two pipes P and Q can fill a tank in 37.5 and 45 min respectively.Both the pipes opened the tank can fill in half an hour.The second pipe,therefore,must be turned on afterA. 32 minB. 34 minC. 21 minD. 12 min 7.two taps 1 and 2 can fill a tank in 15 minutes and 20 minutes respectively.Both the taps are opened together but after 4 min ,tap 1 is turned off.What is the total time required to fill the tank?A. 12 min 30 secB. 13 min 30 secC. 14 min 30 secD. 14 min 40 sec 8. Three taps can together fill a tank in 12 hours.If tap1 can fill it in 10 hours and second in 15 hours ,in how many hours the third tap can empty it?A. 13B. 14C. 12D. 16 9.A and B two taps can fill a tank in 60 min and 75 min respectively.There is another tap C.If we open all the three taps together,the tank full in 50 min.How much time,will be taken by C to empty the tank?A. 120 minB. 100 minC. 80 minD. 130 min 10. A pipe can fill a tank in 2 hours .Because of leak,it took 2 1/2 hrs to fill the tank.After tank is full,how much time will it take to empty the tank?A. 3 hrsB. 5 hrsC. 8 hrsD. 10 hrs 11. Two pipes A and B can fill a large tank in 60 and 40 min respectively.How much time it will take to fill the tank from the empty state if B is used for half the time and A and B fill it together for another half?A. 30 minB. 40 minC. 12 minD. 35 min 12. An oil tank ,which capacity is 500 litres of oil and as many buckets of oil as each bucket had the capacity.What was the capacity of each bucket in litres?A. 20B. 21C. 34 D. 23 13. Two pipes can fill the cistern in 25 and 40 min respectively.If both the pipes are used together ,then how long will it take to fill the tank?A. 20 minB. 30 minC. 45 minD. 15 min 14. Two taps can fill a tank in x and y hours respectively.They can together fill it in (x>y)A. (x-y) hrsB. (y-x) hrsC. xy/(x-y) hrsd. xy/(y-x) hrs 15. A tank can be filled by two taps in 8 hrs and 10 hrs respectively.When tank is full,the tank can be emptied by third tap in 12 hours.If all the taps are turned on at the same time,the tank will be full inA. 2 hrsB. 3 hrsC. 4 hrsD. none of the above No related posts.