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Pipes and Cistern
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Two pipes A and B can separately fill a cistern in 60 min and 75 minrespectively.
There is a third pipe in the bottom of the cistern to empty it. If all the three pipes are simultaneously opened, then the cistern is full in 50min.
In how much time, the third pipe alone can empty the cistern
100 min
90 min
120 min
110 min
Two pipes A and B can fill a tank in 15 min and 20 minrespectively.
Both the pipes are opened together but after 4 min, pipe A is turnedoff.
What is the total time required to fill the tank
12 min 30 sec
14 min 40 sec
11 min 45 sec
10 min 20 sec
Three pipes A, B and C can fill a tank in 6hours.
After working at it together for 2hours.
C is closed A and B can fill the remaining par in 7hours.
The number of hours taken by C alone to fill the tank is
10
12
16
14
One pipe can fill a tank three times as fast as anotherpipe.
If together the two pipes can fill tank in 36 min, then the slower pipe alone will be able to fill the tank in
108 min
144 min
192 min
81 min
A cistern is normally filled in 8 hours but takes two hours longer to fill because of a leak in itsbottom.
If the cistern is full the leak will empty it in
16 hrs
25 hrs
20 hrs
40 hrs
Pipes A and B can fill a tank in 5 and 6 hoursrespectively.
Pipe C can empty it in 12hours.
If all the three pipes are opened together, then the tank will be filled in
3 9/17 hours
1 13/17 hours
4 1/2 hours
2 8/11 hours
Three pipes of same capacity can fill a tank in 8hours.
If there are only two pipes of same capacity, the tank can be filled in
NONE OF THESE
17 hours
16 hours
24 hours
12 hours
Two pipes can separately fill a tank in 20 and 30 hoursrespectively.
Both the pipes are opened to fill the tank but when the tank is full, a leak develops in the tank through which one-third of water supplied by both the pipes goesout.
What is the total time taken to fill the tank
18 hrs
12 hrs
15 hrs
16 hrs
A cistern is filled by a tap in 3 1/2hours.
Due to leak in the bottom of the cistern, it takes half an hour longer to fill thecistern.
If the cistern is full how long will it take the leak to empty it
7 hours
8 Hours
14 hours
28 hours
Two taps can separately fill a cistern 10 minutes and 15 minutes respectively and when the waste pipe is open, they can together fill it in 18minutes.
The waste pipe can empty the full cistern in
9 min
7 min
13 min
23 min
Two pipes A and B can separately fill a cistern in 10 and 15 minutesrespectively.
A person opens both the pipes together when the cistern should have been was full he finds the waste pipeopen.
He then closes the waste pipe and in another 4 minutes the cistern wasfull.
In what time can the waste pipe empty the cistern when fill
7 min
10 min
8 min
9 min
Pipe A can fill a tank in 16 minutes and pipe B cam empty it in 24minutes.
If both the pipes are opened together after how many minutes should pipe B be closed, so that the tank is filled in 30 minutes
NONE OF THESE
24
23
20
22
Two pipes A and B together can fill a cistern in 4hours.
Had they been opened separately, then B would have taken 6 hours more than A to fillcistern.
How much time will be taken by A to fill the cistern separately
2 hrs
6 hrs
8 hrs
1 hr
Pipe A can fill a tank in 6hours.
Due to a leak at the bottom, it takes 9 hours for the pipe A to fill thetank.
In what time can the leak alone empty the full tank
15 hours
16 hours
NONE OF THESE
17 hours
18 hours
A large tanker can be filled by two pipes A and B in 60 minutes and 40 minutesrespectively.
How many minutes will it take to fill the tanker from empty state if B is used for half the time and A and B fill it together for the other half
30 min
27.5 min
15 min
20 min
Two pipes can fill a tank in 18 minutes and 15minutes.
An outlet pipe can empty the tank in 45minutes.
If all the pipes are opened when the tank is empty, then how many minutes will it take to fill the tank
12
13
11
10
NONE OF THESE
A tap can fill a tank in 6hours.
After half the tank is filled, three more similar taps areopened.
What is the total time taken to fill the tank completely
3 hrs 15 min
4 hrs
4 hrs 15 min
3 hrs 45 min
A tank is filled by three pipes with uniformflow.
The first two pipes operating simultaneously fill the tank in the same during which the tank is filled by the third pipealone.
The second pipe fills the tank 5 hours faster than the first pipe and 4 hours slower than the thirdpipe.
The time required by the first pipe is
6 hrs
30 hrs
15 hrs
10 hrs
A large tanker can be filled by two pipes A and B in 60 and 40 minutesrespectively.
How many minutes will it take to fill the tanker from empty state if B is used for half the time and A and B fill it together for the other half
15 min
30 min
20 min
27.5 min
A tank is filled in eight hours by three pipes A, B and
C. Pipe A is twice as fast as pipe B, and B is twice as fast as
C. How much time will pipe B alone take to fill the tank
36 hours
28 hours
NONE OF THESE
24 hours
32 hours
1
2
3
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