Question

An 8-ounce glass of orange juice contains 72milligrams of vitamin C. How much juice contains 60milligrams of vitamin C?

Answer 1

8 ounce glass ----> 72 miligrams of vitamin C

x ounce glass ----> 60 miligrams of vitamin C

$\begin{gathered} x\times72=8\times60 \\ 72x=480 \\ \frac{72x}{72}=\frac{480}{72} \\ x=\frac{20}{3} \\ x=6\frac{2}{3} \end{gathered}$

answer:

6 2/3 ounce glass of orange juice