1/10 of 97.50..." of " means multiply
1/10 * 97.50 = 97.50/10 = 9.75 <==
7.5 would be my best guess
4 friends evenly dividing up a n - slice pizza
So each one get
slices of pizza.
For example, if n = 12 slice then each friend gets 12/4 = 3 pieces. If Harris ate one slice less then he ate
=3 -1 = 2 pieces.
So the general expression for slices of pizza did Harris eat is

Wouldn’t the answer be 19.