Mathematics · Time and Work
Two pipes can fill a cistern, individually, in 30 min and 60 min, respectively. There is an outlet pipe located at the bottom of the cistern to empty it. If all three pipes are opened simultaneously, the empty cistern gets filled in 25 min. How long will the outlet pipe take to empty the completely filled cistern if no other pipe is open?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1100 min✓
- 2102 min
- 384 min
- 4116 min
Correct answer
100 min
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