Differentail Equation. Please help me show all the steps. Thank you

1. (12) Three tanks are filled with a dye solution. Tanks A and B initially contains 20hg of dye and tank C is initially pure water. A solution that contains 3hg/L of dye is pumped into tank A at a rate of 50L/hr. The solution in tank A flows out to tank B at a rate of 40 L/hr and out an exhaust spout at a rate of 20L/hr. The solution in tank B flows into tank A at a rate of 10L/hr, into tank C at a rate of 30L/hr, and out an exhaust spout at a rate of 10L/hr. The solution in tank C flows into tankB at a rate of 10L/hr and out an exhaust spout at a rate of 20L/hr. Tank A holds 200L, tank B holds 100L, and tank C holds 100L. Set up a system to determine the amount of dye in each tank at a given time t. Write your final system in matrix form. "You do not need to solve the system