Answer:
[tex]2\dfrac{1}{3}\ \text{cups}[/tex]
Step-by-step explanation:
Amount of chopped onions required = [tex]3\dfrac{2}{3}\ \text{cups}[/tex]
Amount of onions Katrina has already chopped = [tex]1\dfrac{1}{3}\ \text{cups}[/tex]
Amount of onions that are required to be chopped is given by
[tex]3\dfrac{2}{3}-1\dfrac{1}{3}\\ =\dfrac{11}{3}-\dfrac{4}{3}\\ =\dfrac{7}{3}\\ =2\dfrac{1}{3}\ \text{cups}[/tex]
Hence, the amount of onions that are required to be chopped is [tex]2\dfrac{1}{3}\ \text{cups}[/tex].