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A tank initially contains 120 L of pure water. A mixture containing a concentration of 9...

A tank initially contains 120 L of pure water. A mixture containing a concentration of 9 g/L of salt
enters the tank at a rate of 3 L/min, and the well-stirred mixture leaves the tank at the same rate.
Determine the differential equation for the rate of change of the amount of salt in the tank at any time t
and solve it (using the fact that the initial amount of salt in the tank is 0g).
Math   Advanced-Math   
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