Aptitude - Pipes and Cisterns - Discussion

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Q.

Two pipes A and B can fill a cistern in 37(1/2) minutes and 45 minutes respectively. Both pipes are opened. The cistern will be filled in just half an hour, if the B is turned off after:                         


A. 5 min B. 9 min
C. 10 min D. 15 min

Answer: Option B
Explaination:

 





Discussion

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