Mathematics · Time and Work
Two pipes can fill a cistern, individually, in 99 min and 36 min, respectively. There is a pipe located at the bottom of the cistern to empty it. If all the three pipes are opened simultaneously, then the empty cistern gets filled in 44 min. How long will the pipe at the bottom of the tank take to empty the completely filled cistern if no other pipe is then open?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 144 min
- 293 min
- 366 min✓
- 437 min
Correct answer
66 min
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