Mathematics · Pipes and Cisterns
A cistern can be filled by one tap in 21 hours and by another tap in 23 hours. How long will it take to fill the cistern if both taps are opened together?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1390/23 hours
- 2421/27 hours
- 3812/7 hours
- 4483/44 hours✓
Correct answer
483/44 hours
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