Aptitude test questions about Pipes and Cistern

Aptitude test questions about Pipes and Cistern These are some aptitude test questions as follows: 1. Sample questions of aptitude test 1. ...

Aptitude test questions about Pipes and Cistern

These are some aptitude test questions as follows:

1. Sample questions of aptitude test



1. A tap can fill a tank in 6 hours. After half the tank is filled, three more similar taps are opened. What is the total time taken to fill the tank completely?
A. 3 hrs 15 min B. 3 hrs 45 min C. 4 hrs D. 4 hrs 15 min

2. Two pipes A and B can fill a tank in 20 and 30 minutes respectively. If both the pipes are used together, then how long will it take to fill the tank?
A. 12 min B. 15 min C. 25 min D. 50 min

3. Two pipes A and B can fill a tank in 15 minutes and 20 minutes respectively. Both the pipes are opened together but after 4 minutes, pipe A is turned off. What is the total time required to fill the tank?
A. 10 min. 20 sec. B. 11 min. 45 sec. C. 12 min. 30 sec. D. 14 min. 40 sec.

4. 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:
A. 60 gallons B. 100 gallons C. 120 gallons D.180 gallons

5. Three pipes A, B and C can fill a tank 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 number of hours taken by C alone to fill the tank is:
A. 10 B. 12 C. 14 D. 16

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