Suppose that an economy has three industries (fishing, agriculture, and mining), and that matrix a is the technology matrix for this economy. f a m " # 0.5 0.2 0.2 fishing 0.3 0.5 0.2 agriculture 0.1 0.4 0.3 mining if surpluses of 180 units of fishing output, 90 units each of agricultural and mining goods are desired, find the gross production of each industry.

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?