Pipes and Cistern - Quantitative Aptitude (MCQ) questions for Q. 28336

Q.  Pipe P can fill a tank in 38 hours. Pipe Q alone can fill it in 19 hours. Pipe R can empty the full tank in 133 hours. If all the pipes are opened together, how much time will be needed to make the tank full?
- Published on 07 Jul 17

a. 28 hours
b. 95 hours
c. 19 hours
d. 14 hours

ANSWER: 14 hours
 
pipes and cisterns

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