Mixed Tank System Mixture of alcohol and water with the tank system shown in the figure below is to be prepared. Pure water to tank A at 10L/min. is fed. While there is a flow from tank A to tank B at a speed of 15L/min, alcohol solution is fed from tank B to tank A at a rate of 5L/min. The product stream leaves the system from tank B at a speed of 10L/min. Initially, there is 20% alcohol solution in tank A. The volume of tank A is 900L. In the B tank, there is 80% alcohol solution at the beginning and the tank volume is 750L. According to this; a) Set up the equations describing the system. b) Derive expressions that give the change of alcohol content in tank A(X(t)) and tank B(Y(t)) over time. c) Calculate the amount of alcohol in tanks A and B after