In: Advanced Math
A brine solution of salt flows at a constant rate of 4 L/min into a large tank that initially held 100 L of pure water. The solution flows out of the tank at a rate of 3 L/min. Set up a DE that governs this situation in terms of the mass of salt in the tank. Solve it.
Please note that you have not mentioned the concentration of salt in brine solution.
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