matt can buy an 8-ounce jar of salad for $2.79 or a 15-ounce jar or salad for $5.54. which jar has the best unit rate?

Answer 1

In order to know which is the best value, we need to know the price per ounce.

Let’s start with the 8 oz. jar:

2.79/8 – which is 0.35. So each ounce of the 8 oz. jar costs 35 cents.

Now let’s find out how much each oz. of the 15 oz. jar costs:

5.54/15 – which is 0.37. So each ounce of the 15 oz. jar costs 37 cents.

since 35 cents is less than 37 cents, the 8 oz. jar is a better deal.

Answer 2

In both cases, divide the number of ounces by the price. The one that gives a higher ounces to price ratio has the better unit rate.