Anjali and Shreya are selling fruit for a school fundraiser. Customers can buy small boxes of grapefruit and large boxes of grapefruit. Anjali sold 12 small boxes of grapefruit and 12 large boxes of grapefruit for a total of $240. Shreya sold 5 small boxes of grapefruit and 12 large boxes of grapefruit for a total of $205. What is the cost each of one small box of grapefruit and one large box of grapefruit?