Talk:Ordinary Differential Equations/First Order Linear 2

For the concentration problem, I think there is a logical error somewhere. The solution given:

a) doesn't give the concentration at time t, like the question was looking for,

b) Has a problem when the Ro is Ri. Logically, the volume would stay at V0, while the concentration of the solution leaving would approach the concentration going out. The solution here doesn't seem to act this way.