4. A tank initially contains 600 gallons of water with 40 lb of salt dissolved in...
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4. A tank initially contains 600 gallons of water with 40 lb of salt dissolved in it. Water consisting 1/2 lb of salt per gallon is poured into the tank at the rate of 4 gal/min and the mixture is drained from the tank at the same rate. Find the amount of salt in the tank at any time t. 4. A tank initially contains 600 gallons of water with 40 lb of salt dissolved in it. Water consisting 1/2 lb of salt per gallon is poured into the tank at the rate of 4 gal/min and the mixture is drained from the tank at the same rate. Find the amount of salt in the tank at any time t.
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