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Mathematics, 22.08.2020 03:01 danielleepham
The fill pipe for a tank can fill the tank in 15 min and the drain pipe can empty the tank in 10 min. If both pipes are accidentally opened, how long will it take to empty the full tank?
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The fill pipe for a tank can fill the tank in 15 min and the drain pipe can empty the tank in 10 min...
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