• product a.
$3.67 for a 12 pack
Cost of each can: divide the price (3.67) by the number of cans per pack (12)
3.67/12 = $0.306 per can
Cost per ounce:
Each can has 12 oz. Divide the cost of each can by the number of ounces.
0.306 /12 = $0.025 per oz
• Product B.
$2.46 per 2-liter bottle
Cost per liter: divide the cost of the bottle by the liters per bottle:
2.46 /2 =$ 1.23 per liter
Cost per Oz
Since:
1 liter =33.8 oz
Divide the cost per liter by the number of 0z per liter:
1.23 / 33.8 =$ 0.036 per oz
Compare the unit rates (price per 0z)
Product a: 0.025
Product b: 0.036
0.025 < 0.036
Product A has a better price.