On a recent trip to the convenience​ store, you picked up 3 gallons of​ milk, 5 bottles of​ water, and 8 snack-size bags of chips. Your total bill​ (before tax) was $28.50. If a bottle of water costs twice as much as a bag of​ chips, and a gallon of milk costs $1.90 more than a bottle of​ water, how much does each item​ cost?