Kelly is at the store picking out cereal. She is trying to decide between the 15 oz box for $2.75 or a 24 oz box for $3.96. Which box is the cheapest per oz? What is the cost per oz for that box?
A.
15 oz box and 20.4 cents/oz
B.
15 oz box and 18.3 cents/oz
C.
24 oz box and 21.2 cents/oz
D.
24 oz box and16.5 cents/oz
To determine which box is the cheapest per ounce, we need to calculate the cost per ounce for each option.
For the 15 oz box priced at $2.75:
Cost per oz = $2.75 / 15 oz = $0.1833 per oz
Therefore, the cost per oz for the 15 oz box is 18.3 cents/oz.
For the 24 oz box priced at $3.96:
Cost per oz = $3.96 / 24 oz = $0.165 per oz
Therefore, the cost per oz for the 24 oz box is 16.5 cents/oz.
Therefore, the cheapest option per ounce is the 24 oz box at 16.5 cents/oz. The correct answer is option D.