Question 888648
The problem follows the format discussed in this:
<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  http://www.algebra.com/tutors/Mixtures%3A-All-in-Symbols.lesson?content_action=show_dev</a>