Question 1073080
<a href="https://www.algebra.com/my/Mixtures%3A-All-in-Symbols.lesson?content_action=show_dev">Two Part Mixture for both quantities unknown, LESSON.
  https://www.algebra.com/my/Mixtures%3A-All-in-Symbols.lesson?content_action=show_dev</a>
https://www.algebra.com/my/Mixtures%3A-All-in-Symbols.lesson?content_action=show_dev


<a href="https://www.youtube.com/watch?v=-REjxT9KCzQ">Two Part Mixture, example, showing the use of just a single variable</a>