A chef needs 60 oz of hot pepper sauce. Which container size represents the better buy?
What will be the total cost of those containers?

30-oz is a better buy

Total cost: $40.80

Step-by-step explanation:

The container with a lesser price per oz will be the better buy.

Let's calculate how much each container will give us per oz:

2-oz container = $1.99/2 = $0.995 per oz

5-oz container = $3.95/5 = $0.79 per oz

12-oz container = $8.76/12 = $0.73 per oz

30-oz container = $20.40 = $0.68 per oz

The 30-oz container is cheaper and would be a better buy.

In total the chef would buy 60-oz of hot pepper sauce for = 60-oz*$0.68 = $40.80

thats not a system of equations, that is a solution