Farmer Joe has 240 acres of land. He is planting corn and oats. He can make a profit of $ 40 per acre from harvesting corn. He can make a profit of $30 per acre from harvesting oats. He has 320 hours available . It takes 2 hours to plant an acre of corn. It takes 1 hour to plant an acre of oats. Let x represent the # of acres of corn to plant . Let y represent the # of acres of oats to plant .