29. A solution containing 90% by volume of alcohol (in water) runs at 1 gal/min into a 100-gal tank of pure water where it is continually mixed. The mixture is withdrawn at the rate of 1 gal/min. When will it start coming out 50% alcohol?

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29.
A solution containing 90% by volume of alcohol (in water) runs at 1 gal/min into a
100-gal tank of pure water where it is continually mixed. The mixture is withdrawn
at the rate of 1 gal/min. When will it start coming out 50% alcohol?
Transcribed Image Text:29. A solution containing 90% by volume of alcohol (in water) runs at 1 gal/min into a 100-gal tank of pure water where it is continually mixed. The mixture is withdrawn at the rate of 1 gal/min. When will it start coming out 50% alcohol?
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