Math 420 Name 3. A large tank initially contains 60L of a solution containing 3 grams of salt per liter. Fluid flows into the tank from two separate valves simultaneously. Pure water flows from valve A at a rate of 4 liters per minute and a solution containing 10 grams of salt per liter flows from valve B at a rate of 2 liters per min. The well-mixed solution is then pumped out of the tank at a rate of 5 liters per minute. Find a function A(t) that will give the amount of salt in the tank (in grams) t minutes after valves A and B were opened