Let’s start by finding out how many pieces the cafeteria provided from their 4 pies.
So the cafeteria provided 20 pieces!
Now lets see how many pieces the cooking club made. We’ll take the total amount of piece of pie and minus the pieces which the cafeteria provided to find the pieces the club made.
The club made 40 pieces of pie!
Since 1 pie is 5 slices, we can determine the amount of pie by dividing the 40 pieces by 5.
The club therefore made 8 pies.