Question 998476
Some variables,
{{{system(L=5,H=10,T=8,M=200,u=volumeLowConc,v=volumeHiConc)}}}


EQUATIONS FROM WHICH TO SOLVE FOR u AND v
{{{system((Lu+Hv)/M=T,u+v=M)}}}


Converting the system into a single equation with only one variable can be done near the beginning, as in this example video:
<a href="https://www.youtube.com/watch?v=-REjxT9KCzQ">two-part mixture using just one variable</a>