Mathematics · Pipes and Cisterns
Two pipes A and B can fill a tank in 22 hours and 33 hours, respectively. A waste pipe C can empty the tank in 55 hours. If all three pipes are opened together, how long will it take to fill the tank (rounded off to two decimal places)?
- 117.37 hours✓
- 217.87 hours
- 316.93 hours
- 418.73 hours
Correct answer
17.37 hours
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