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Consider a large tank holding 1000 L of pure water into which a brine solution of...

Consider a large tank holding 1000 L of pure water into which a brine solution of salt begins to flow at a constant rate of 6 L/min. The solution inside the tank is kept well stirred and is flowing out of the tank at a rate of 4 L/min. If the concentration of salt in the brine entering the tank is 0.3 kg/L, determine when the concentration of salt in the tank will reach 0.1 kg/L.
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