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Answer:
A small box of the same cereal has 19 ounces and costs 4.19.
Step-by-step explanation:
In the first case, you have $3.37 per 15.3 ounces
Thus take 3.37 / 15.3 and you get $0.2203 per ounce or 22 cents per ounce
In the second case, you have $4.59 per 20 ounces
Thus take 4.59 / 20 and you get $0.2295 per ounce or almost 23 cents per ounce
So the smaller box actually has a slightly cheaper cost per ounce associated with it.