I am finding hard to understand this question logicallly. Please help.
I know its in minus out ..but im not getting it.
Two tanks, each containing 200 litres of a mixture, are connected as shown in
Fresh water is pumped into tank A at a rate of 15 L/min. Further, the mixture is
pumped from tank A to tank B at a rate of 20 L/min, and from tank B to tank A at 5 L/min.
Water then flows out of tank B at the rate of 15L/min. Suppose that initially tank A contains 60
grams of salt while tank B contains pure water
Find a system of differential equations modelling the situation.(obviously later i have to put it into a matrix)