The price of a gallon of a cider apple is $7.00. The price of eight 4.23 ounce juice boxes is $2.39. Suppose the juice was installed package like the Seiter approximately what is the cost per gallon of the juice

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?