Self-Study Problem 19-1 (Algo) Return on Investment and Residual Income [LO 19-1, 19-2] Selected data from an investment center of IROL Incorporated follow: Required: 1. Calculate return on sales (ROS), asset turnover (AT), and return on investment (ROI). (Round "Asset turnover (AT)" answer to 3 decimal places and other answers to 2 decimal places. Only enter ROl as a \%.) 2. Calculate residual income (RI)