Question

Mrs.Silva orders 5 pizzas for every 20 students working on the campus clean-up. How many pizzas should she order if 36 students participate? How many pizzas should she order if 48 students participate?

Answer 1

Mrs.Silvia should buy 12 pizzas.

One way to solve is this is by finding the amount of students if 1 pizza is order. So you do

1: 20÷5=4

2: Set up a proportion(photo)

Answer 2

Ok. So Mrs. Silva orders 5 pizzas for every 20 students. Which means if you divide 5 by 20, you would get 4. So I believe we just found out how many pizza slices are in one pizza. Then, divide 36 by 4. You get 8 pizzas. Now, let’s solve it for 48 students. Divide 48 by 4, and you get 12.