Question 987892
If you take the view that PRICE is a concentration, as DOLLARS per POUND, then the idea is conceptually the same as what is represented through this other specific example presentation:


<a href="https://www.youtube.com/watch?v=-REjxT9KCzQ">two-part mixture, just one variable</a>


A lesson for this same idea, but using two unknown variables:
<a href="http://www.algebra.com/my/mixture-price-two-part-both-parts-unknown.lesson?content_action=show_dev">two-part mixture, price or cost - LESSON</a>