Help
Thank you
Let $\displaystyle a(t), b(t),$ and $\displaystyle c(t)$ be the mass of the three componds present at time t.Originally Posted by askmemath
Translating the givens into a set of equations gives (hopefully correctly this time):
$\displaystyle \dot c(t)=\alpha\ a(t).b(t)$ for some rate constant $\displaystyle \alpha$, which we will determin later
$\displaystyle c(t)=90-b(t)$
$\displaystyle c(t)=(50-a(t))*2$
Which may be manipulated to give:
$\displaystyle \dot c(t)=\alpha\ (50-c(t)/2)(90-c(t))$,
which is an ODE of variables seperable type.
(I may continue this when I have a bit more time)
RonL