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Mathematics, 12.12.2021 02:10 s9003792

An inlet pipe can fill a tank in 10 minutes. A drain can empty the tank in 20 minutes. If the tank is empty, and both the pipe and drain are open, how long will it take before the tank overflows?

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An inlet pipe can fill a tank in 10 minutes. A drain can empty the tank in 20 minutes. If the tank i...

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