To make purple paint, mya mixed 2/5 cup of red paint with 5/8 cup of blue paint. she wants to make a larger batch of the purple paint. how much red paint is needed to mix one cup of blue paint?

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?