Question 878683
Typical two-part mixture percents concentration problem.  Learn how to solve them in this lesson:
<a href="http://www.algebra.com/tutors/Mixtures%3A-All-in-Symbols.lesson?content_action=show_dev">Mixing two concentrations for known amount of mixture </a>


H = 80
L = 40
T = 50
M = 600
u = volume of 40%
v = volume of 80%


{{{(Lu+Hv)/M=T}}} and {{{u+v=M}}}