Question 26782
I just happened to have created a "solver" for this type of problem earlier today (playing with the site's programing language), go to <a href="http://www.algebra.com/algebra/homework/coordinate/word/change-this-name4505.solver">this page</a> and see if that answers your questions... my problem is virtually identical. Basically, you want to set up a system of two equations, one based on the total volume, and one based on a percentage of acids. Let me know if you still have questions.