Problem 2 Tank Problem SET UP and SOLVE COMPLETELY (7 pts) Suppose a large mixing tank initially holds 200 liters of salt water with a salt concentration of 5 grams per liter. Another salt water solution is pumped into the tank at a rate of 3 liters per minute. The concentration of salt in this inflow is 0.4 grams per liter. Assume the solution is well mixed and is pumped out at the same rate as the entering solution. Set up an initial value problem modeling this situation and find a formula for amount of salt S(t), as a function of time. As time t, what can you say about the amount of salt