A cistern can be filled by one tap in 8 hours, and by another in 4 hou – InterviewSolution

1.	A cistern can be filled by one tap in 8 hours, and by another in 4 hours. How long will it take to fill the cistern if both taps are opened together?
Answer» A cistern can be filled by one tap in $8$ hours, and by another in $4$ hours. How long will it take to fill the cistern if both taps are opened together?

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