Question

At a​ supermarket, a​ 6-ounce bottle of brand A salad dressing costs​ $1.56. A​ 14-ounce bottle costs​ $3.36. A​ 20-ounce bottle costs​ $5.60. What unit prices do you need to know to find the best​ buy? What is the best​ buy?

Answer 1

You need to know the cost per ounce, or how many cents per one ounce, and the best buy is the 14-ounce bottle.

Answer 2

1) If 6 ounce bottles of Brand A salad dressing costs= $1.56

Cost of 1 ounce bottle= $1.56÷6

Here , cost of one ounce Bottle= $0.26

2) if 14 -ounce bottle costs= $3.36

Cost of 1 ounce bottle= $3.36÷14

Here , cost of one ounce Bottle= $0.24

3) if 20 -ounce bottle costs= $5.60

Cost of 1 ounce bottle= $5.60÷20

Here , cost of one ounce Bottle= $0.28

Hence, the best price is $0.24 per ounce

Hence, we should buy 14 ounce bottle costs $3.36