Question

4 friends evenly divided up a n-slice pizza. One of the friends,Harris, ate 1 fewer slice than he received. How many slices of pizza did Harrison eat? Write your answer as an expression.

Answer 1

Harrison ate $\frac{n-4}{4}$ slices of pizza.

Explanation

4 friends evenly divided up a $n$-slice pizza.

So, the number of slices each friend received $=\frac{n}{4}$

Now, Harrison ate 1 fewer slice than he received. As he received $\frac{n}{4}$ slices, so 1 fewer than  $\frac{n}{4}$ means......

$\frac{n}{4}-1 \\ \\= \frac{n-4}{4}$

Thus, Harrison ate $\frac{n-4}{4}$ slices of pizza.