Mathematics · Pipes and Cisterns
Two pipes can fill a tank in 4 hours and 6 hours respectively. A third pipe can empty the same tank in 10 hours. If all the pipes start working together, how long will it take to fill the tank?
- 12839 hrs
- 22419 hrs
- 31960 hrs
- 46019 hrs✓
Correct answer
6019 hrs
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