Baking a tray of corn muffins takes 6 cups of milk and 5 cups of wheat flour. Baking a tray of bran muffins takes 3
cups of milk and 5 cups of wheat flour. A baker has 24 cups of milk and 25 cups of wheat flour. He makes $5 profit
per tray of corn muffins and $3 profit per tray of bran muffins. How many trays of each type of muffin should the
baker make to maximize his profit?