Pipes and Cistern - Quantitative Aptitude (MCQ) questions for Q. 28615

Q.  A pipe can fill a tank in 6 hours. Another pipe can empty the tank in 12 hours. If both pipes are opened simultaneously, the part of tank filled by both pipes in 1 hour is?
- Published on 17 Mar 17

a. 1/9 th part
b. 1/6 th part
c. 1/12 th part
d. 1/3 rd part

ANSWER: 1/12 th part
 
pipes and cisterns

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