Answer: To find the ratio of the cost of an 8-ounce box to a 16-ounce box of cereal, we can divide the cost of an 8-ounce box by the cost of a 16-ounce box:
8 oz: $12
16 oz: $20
The ratio of the cost of an 8-ounce box to a 16-ounce box of cereal is:
12/20 = 3/5
So the answer is 3:5.
Explanation: