You manufacture boys and girls bikes in 20 inch wheel size and 26 inch wheel size. Your optimal production mix is shown in the Excel Sensitivity Analysis below. One of your constraints is that there are only 4800 minutes of worker time available in the Assembly area. If the number of minutes available had to drop to 4,633 because of worker injuries, what would be the CHANGE in the profit level? ("-" for a decrease, two decimal places)