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Mathematics, 13.09.2019 18:20 Darakeji419
Apond is being drained through an outlet pipe, then will be filled through an inlet pipe. if the inlet pipe can fill the pond in 9 hours and the outlet pipe can empty the pond in 15 hours, how long would it take to fill the pond if the outlet pipe was left open?
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Apond is being drained through an outlet pipe, then will be filled through an inlet pipe. if the inl...
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