Consider the following basket of goods: 50 bottles of milk, 100 avocadoes, 50 apples, and eight pineapples. Suppose that last year, each bottle of milk was $2.50, each avocado was $1.50, each apple was $0.75, and each pineapple was $4. This year, each bottle of milk is $2.50, each avocado is $1.80, each apple is $0.80, and each pineapple is $4.30. What is the inflation rate between last year and this year