Atank originally contains 100 gal of fresh water. then water containing 1/2 lb of salt per gallon is poured into the tank at a rate of 2 gal/min, and the mixture is allowed to leave at the same rate. after 10 min the process is stopped, and fresh water is poured into the tank at a rate of 8 gal/min, with the mixture again leaving at the same rate. find the amount of salt in the tank at the end of an additional 10 min.
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Atank originally contains 100 gal of fresh water. then water containing 1/2 lb of salt per gallon is...
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