Mathematics · Pipes and Cisterns
Two pipes can fill a cistern, individually, in 33 minutes and 22 minutes, respectively. There is an emptying pipe located at the bottom of the cistern. If all three pipes are opened simultaneously, the empty cistern gets filled in 18 minutes. How long (in minutes) will the pipe at the bottom take to empty the completely filled cistern if no other pipe is open?
- 199
- 249.5✓
- 379
- 439.5
Correct answer
49.5
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