A candy selection of 5 gumdrops and 8 caramels has 511 calories. another selection of 3 gumdrops and 10 caramels has 525 calories. how many calories are in a piece of each kind of candy

Kayla and alberto are selling fruit for a school fundraiser. customers can buy small boxes of grapefruit and large boxes of grapefruit. kayla sold 3 small boxes of grapefruit and 1 large box of grapefruit for a total of $65. alberto sold 1 small box of grapefruit and 1 large box of grapefruit for a total of $55. what is the cost each of one small box of grapefruit and one large box of grapefruit?