Mathematics · Work and Time
Two pipes can fill a cistern, individually, in 36 min and 45 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 100 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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- 125 min✓
- 218 min
- 333 min
- 439 min
Correct answer
25 min
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