Pipes and Cistern - Quantitative Aptitude (MCQ) questions for Q. 29376

Q.  Tap P alone fills a cistern in 2 hours; while tap Q alone fills the same cistern in 3 hours. A new tap R is attached to the bottom of the cistern which can empty the completely filled cistern in 6 hours. Sunny started all three taps together at 9am. When will the tank be full?
- Published on 11 Apr 17

a. 10.30 am
b. 11.15 am
c. 12 pm
d. 9.45 am

ANSWER: 10.30 am
 
pipes and cisterns

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