Dimensional Analysis

$$\frac{.75\ cups}{1\ }$$

$$\frac{\frac{3}{4}\ cups}{4}$$

.75 cups

$$\frac{.75\ ounces}{1}$$

$$\frac{.75\ cups}{1\ }\ \times\ \frac{16\ ounces}{1\ cup}$$

$$\frac{\frac{3}{4}\ cups}{4}\ \times\frac{16\ ounces}{1\ cup}$$

$$\frac{.75\ cups}{1}\ \times\ \frac{1\ cup}{16\ ounces}$$  

$$\frac{.75\ ounces}{1}\ \times\frac{16\ cups}{1\ ounce}$$

Multiply across the top and bottom

Multiply across the top only

Multiply across the bottom only 

Cross multiply

$$12\ Ounces$$

$$3\ Ounces$$

$$.047\ \frac{cups^2}{ounces}$$  

$$12\ cups$$