A tank initially contains 60 gallons of brine in which there is dissolved 8 lbs. of salt. Brine containing 2 lbs. of dissolved salt per gallon flows into the tank at the rate of 5 gal/min. The mixture is kept uniform by stirring, and the stirred mixture simultaneously flows out at the slower rate of 3 gal/min. How much salt is in the tank at any time t>0?
Added by Eric L.
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The amount of salt in the tank at any time t is given by the function S(t). Show more…
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