Question 852016
Everything I would explain and show for your question is made into a lesson on this kind of problem.


See this one:  <a href="http://www.algebra.com/tutors/Mixtures%3A-All-in-Symbols.lesson?content_action=show_dev">http://www.algebra.com/tutors/Mixtures%3A-All-in-Symbols.lesson?content_action=show_dev</a>