Question 1010529
How much pure antifreeze?  How much of the mixture?  Ratio!  You want this ratio to be  0.55, and you know the sum of the two antifreeze materials to be mixed is 8 liters.


Full lesson here:  <a href="http://www.algebra.com/my/Mixtures%3A-All-in-Symbols.lesson?content_action=show_dev">Mix two materials to get known quantity of known concentration</a>