Mathematics · Pipes and Cisterns
Two pipes can fill a cistern in 12 hours and 15 hours respectively, while a third pipe can empty it in 24 hours. If all three pipes are opened simultaneously, in how much time (to the nearest minute) will the cistern be completely filled?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 19 hours 14 minutes✓
- 29 hours 10 minutes
- 39 hours 12 minutes
- 49 hours 13 minutes
Correct answer
9 hours 14 minutes
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