Answer:
The fractional part of a whole pizza did Brad ate is:
[tex]C=\frac{x}{X}\\P=\frac{y}{Y}[/tex]
Step-by-step explanation:
Suppose x portion of the cheese pizza and y portion of a pepperoni pizza were left.
Consider the whole of a cheese pizza as X and the whole of a pepperoni pizza as Y.
Then the fractional part of a whole pizza did Brad ate is:
[tex]C=\frac{x}{X}\\P=\frac{y}{Y}[/tex]