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 oz, we divide the total cost by the total number of ounces in each box.
For the 15 oz box:
Cost per oz = $2.75 / 15 oz = $0.1833 per oz
Therefore, option B) 15 oz box and 18.3 cents/oz is the correct answer.
For the 24 oz box:
Cost per oz = $3.96 / 24 oz = $0.165 per oz
Therefore, the correct answer is not option D) 24 oz box and 16.5 cents/oz, it should be option C) 24 oz box and 21.2 cents/oz.