Density of solution: 1100 kg/m3 Heat Capacity: 5.0 KJ/KgC A tank holds 1,500 m3 of brine solution with a 25 kg/m3 concentration. The ideal concentration is 20 kg/m3. Water is pumped into the tank at 15 m'min to adjust the concentration, while the brine solution flows out at the same volumetric flow rate into a reservoir for future use. The concentration in the effluent is identical to that in the tank. 1. Develop the equation for the concentration of the brine solution as a function of time (min). Show all the steps of the derivation. 2. How many minutes will it take for the concentration of the brine solution to reach its optimal value