Mathematics · Pipes and Cisterns
A cistern has a hole in the bottom through which water is leaking. An inlet tap can fill the cistern in 3 hours and the hole at the bottom can empty the fully filled cistern in 5 hours. If both the tap and the hole are open simultaneously, how long will it take to completely fill the empty cistern?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 17.5 hours✓
- 26.5 hours
- 38.5 hours
- 47 hours
Correct answer
7.5 hours
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