Question 877544
u = grams 10% glucose
v = grams of solid dry glucose, which is obviously 100%
You are working strictly in mass.


{{{(10u+100v)/90=20}}} and {{{u+v=90}}}


Everything is explained and solved in this lesson:
<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>