A name brand cereal is on sale and costs $4.50 for an 18.2oz box. The great value brand version of the cereal costs $4.03 for a 13.1oz box. Which cereal costs less per ounce

You do 4.50 divided by 18.2 and that equals 0.25 cents Pero oz and then you do 4.03 divided by 13.1 which that equals 0.31 cents per oz which that would mean the name brand cereal that's on sale cost less Per oz