Question: a tank contains 360 liters of fluid in which 20...
A tank contains 360 liters of fluid in which 20 grams of salt is dissolved. Brine containing 1 gram of salt per liter is then pumped into the tank at a rate of 6 L/min; the well-mixed solution is pumped out at the same rate. Find the number
of grams of salt in the tank at time t.