Aptitude - Pipes and Cisterns - Discussion

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Q.

Three taps A, B and C can fill a tank in 12, 15 and 20 hours respectively. If A is open all the time and B and C are open for one hour each alternately, the tank will be full in:                         
A. 6 hours B. 4 hours
C. 7 hours D. None

Answer: Option C
Explaination:

 


Discussion

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