Question 1013385
The pure acid is 100%.  If this pure acid is a liquid, then you can use the instructive discussion here: <a href="http://www.algebra.com/my/Mixtures%3A-All-in-Symbols.lesson?content_action=show_dev">Solve for both parts of a two-part mixture</a>.


You can also assign just one single variable to solve the problem which might be a little faster or easier.