Two pipes can fill a tank in 10 hours and 12 hours respectively while third pipe empties the full tank in 20 hours. If all the three pipes operate simultaneously, in how much time the tank will be filled

1.  7 hours

2.  7 hours 30 mm

3.  8 hrs

4.  8 hrs 30 mm

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4
Correct Answer :

7 hours 30 mm


Explanation :
No Explanation available for this question

Two pipes A and B can fill a cistern in 37 minutes and 45 minutes respectively. Both pipes are opened. The cistern will be filled in just half an hour, if the B is turned off after:

1.  5 min

2.  9 min

3.  10 min

4.  15 min

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4
Correct Answer :

9 min


Explanation :
No Explanation available for this question

One tap can fill a cistern in 2 hours and another tap can empty the cistern in 3 hours. How long will they take to fill the cistern if both the taps are opened

1.  5 hrs

2.  7 hrs

3.  6 hrs

4.  8 hrs

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4
Correct Answer :

6 hrs


Explanation :
No Explanation available for this question

A tank is filled by three pipes with uniform flow. The first two pipes operating simultaneously fill the tank in the same time during which the tank is filled by third pipe alone. The second pipe fills the tank 5 hours faster than the first pipe and 4 hours slower than the third pipe the time required by the first pipe is:

1.  6 hours

2.  10 hours

3.  15 hours

4.  30 hours

View Answer  
4
Correct Answer :

15 hours


Explanation :
No Explanation available for this question

12 buckets of water fill a tank when the capacity of each bucket is 13.5 liters. How many buckets will be needed to fill the same tank, if the capacity of each bucket is 9 liters

1.  8

2.  15

3.  16

4.  18

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4
Correct Answer :

18


Explanation :
No Explanation available for this question

A large tanker can filled by two pipes A and B in 60 minutes and 40 minutes respectively. 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

1.  15 min

2.  20 min

3.  27.5 min

4.  30 min

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4
Correct Answer :

30 min


Explanation :
No Explanation available for this question

One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill the tank in 36 minutes, then the slower pipe alone will be able to fill the tank in:

1.  81 min

2.  108 min

3.  144 min

4.  192 min

View Answer  
4
Correct Answer :

144 min


Explanation :
No Explanation available for this question

Two pipes A and B can fill a cistern in 12 minutes and 16 minutes respectively. If both the pipes are opened together, then after how much time B should be closed so that the tank is full in 9 minutes

1.  3 min and 30 sec

2.  4 min and 30 sec

3.  4 min

4.  4 min 77 sec

View Answer  
4
Correct Answer :

4 min


Explanation :
No Explanation available for this question

Two pipes can fill a tank in 20 and 24 minutes respectively and a waste pipe can empty 3 gallons per minute. All the three pipes working together can fill the tank in 15 minutes. The capacity of the tank is:

1.  60 gallons

2.  100 gallons

3.  120 gallons

4.  180 gallons

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4
Correct Answer :

120 gallons


Explanation :
No Explanation available for this question

A cistern can be filled in 9 hours but it takes 10 hours due to in its bottom. If the cistern is full, then the time that the leak will take to empty it, is

1.  60 hours

2.  80 hours

3.  70 hours

4.  90 hours

View Answer  
4
Correct Answer :

90 hours


Explanation :
No Explanation available for this question
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