Q.1
A tap can empty a tank in 60 minutes. The second tap can fill 50 minutes. If the tank is empty totally and Both taps are opened together , how long will it take to fill the tank?

Q.2
Three tap can fill a tank in 12 hours. If a tap can fill in 10 hours. And the second in 15 hours, then the third tap emptied in how long can it?

Q.3
The quantity of water that fills in the boat that can be removed by a tap in 20 minutes.but due to a hole in the bottom of boat the empty boat fills in 40 min.without closing the hole in how much time the water of boat will zero by the removing tap ?

Q.4
A tap fills a tank in 4 hours and a second tap can empty this tank in 3 hours .the tank is filled than before then both taps are opened together then in how much time the tank will be empty ?

Q.5
Two pipes A and B can fill a tank in 28 minutes and 42 minutes respectively.third pipe C can empty it in 42 minutes. If three tank should be opent together, then how long will it take to fill the tank ?

Q.6
A tank can fill a tank in 20 minutes, while other tank can fill it in 60 min,. If both tank are opened together till 10 min., and the first tank is closed then how long time will to fill the tank totally ?

Q.7
There are three taps in a tank. If tap A and B fills a tank in 8 min. and tap C can empty a tank in 12 mintues tehn in how much time the tank will filled while all three taps are opened ?

Q.8
One cistern is engaged with two taps. Emptry Cistern is filled in 10 minutes by first tap and another tap makes empty tank in 10 minutes. When the tank is half-full to open the taps together how long will fill the tank?

Q.9
One tank/cistern is engaged with two taps. First Tap can fill empty tank in 18 minutes, but another tap can empty to tank in 12 minutes. Half full tank should be opened with the two taps, then how long will the tank be full or empty?

Q.10
Two taps is imposed in a kerosene drum. First tap and the second tap takes 25 minutes and 35 minutes to extract the entire oil from the tank. The second tap was opened after 5 minutes removing oil from first tap. Now, how long will all oil out of drums?

Q.11
A pump fills water tank in 3 hours, but due to the hole in the bottom of a tank takes$3\frac{1}{2}$ hours to fill the tank. How much time will it take to empty the filled tank ?

Q.12
Three taps can fill a tank in 30 minutes, 45 minutes and 60 minutes respectively. Fourth tap removes water 30 liters per minute from the tank. Opening with four taps into the tank is filled in 36 minutes. What is the capicity  of the tank?

Q.13
Capacity of bucket P is tripled than bucket Q. To fill an empty drum bucket C has to pour over 60 times. In how many times it will be full to putting both filling bucket into empty drum ?

Q.14
A tank can be filled by a tap in 8 hours, but due to a fine hole in the bottom of the tank it takes more than 2 hours to fill the tank. In how many hours it will make clear the tank ?

Q.15
2 taps are engaged with a tank. One fills it and other removes water from that one. if tap of removing water is closed then tank is filled in 10 minute and if tap of removing water is opened then tank takes 15 minute more to fill. So how much time will be taken by tap to empty filled tank ?

Q.16
With a tap of Corporation a home tank is filled in 30 minutes. Then work up to 4 hours with a tap of the pool. One day tap of Corporation was opened only for 25 minutes, then how much work will be done by tap of tank that day ?

Q.17
Three taps A, B and C fill a tank in 12, 15 and 20 hours respectively. If tap A is opened for full-time up and taps B & C are opened alternately for one hour, then in how many time the tank will be filled ?

Q.18
There are three pipes to fill a tank whose diameter are 1 cm., $1\frac{1}{3}$ and 2 cm respectively. A pipe with a diameter of more than fills the tank in 61 minutes. Water volume flowing into each pipe diameter is proportional to the square. If we opened the three pipe together, how long will it take to fill the tank?

Q.19
An empty tank can be filled by two pipes in 15 hours and 12 hours respectively, while a third pipe can empty the filled tank in 20 hours. If three pipe will be opened together in the empty tank, then how long will it take to fill the tank?

Q.20
Two taps A and B together can fill an empty tank in 18 hours. If tap B can fill it in 24 hours, then in how many hours A alone will fill the empty tank ?

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