Selected data from an investment center of IROL Incorporated follow: Sales Net book value of assets, beginning Net book value of assets, ending Net operating income Minimum rate of return Required: $ 9,000,000 3,100,000 3,100,000 4,320,000 12% 1. Calculate return on sales (ROS), asset turnover (AT), and return on investment (ROI). (Round " decimal places and other answers to 2 decimal places. Only enter ROI as a %.) 2. Calculate residual income (RI). 1. Return on sales (ROS) Asset turnover (AT) Return on investment (ROI) 2. Residual income (RI) times %