Pipes and Cistern - Quantitative Aptitude (MCQ) questions for Q. 29274

Q.  A cistern can be filled in 6 hours by taps P and Q. If tap R also joins them, then cistern is filled in 5 hours. Tap P can fill the cistern at twice the rate of tap Q. In what time tap Q and R fill the cistern?
- Published on 11 Apr 17

a. 9.75 hours
b. 10. 90 hours
c. 11.25 hours
d. 12.90 hours

ANSWER: 11.25 hours
pipes and cisterns

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