1 cup is equivalent to 8 ounces.
To find how many ounces are equivalent to 2 cups, we can use the next proportion:
[tex]\frac{1\text{ cup }}{2\text{ cups}}=\frac{8\text{ ounces}}{x\text{ ounces}}[/tex]Solving for x,
[tex]\begin{gathered} 1\cdot x=8\cdot2 \\ x=16\text{ ounces} \end{gathered}[/tex]