Question 988557
{{{(20*10-8*20)/(8-5)=13&1/3}}}


Do you want to know how?
<a href="http://www.algebra.com/my/Two-Part-Mixture-with-one-material-quantity-unknown.lesson?content_action=show_dev">Lesson: two-part mixture, one quantity unknown, http://www.algebra.com/my/Two-Part-Mixture-with-one-material-quantity-unknown.lesson?content_action=show_dev</a>