Question 1001385
Another one of these types.  They are all the same except as different examples.


See a generalized solution discussion:  <a href="http://www.algebra.com/my/mixture-price-two-part-both-parts-unknown.lesson?content_action=show_dev">two part mixture, price </a>


See a typical example on video:   <a href="https://www.youtube.com/watch?v=-REjxT9KCzQ">ONE variable for two-part mixture, example</a>----------don't let the percentage instead of price throw you off-track.  They can BOTH be considered to be a form of concentration.  The percentage is how many parts in 100 whole parts; and price is how much money in one whole unit of material.