Selected financial information for Magnetic Imaging Corporation is shown below. Sales Net operating income Average operating assets $ 18,500,000 $ 6,300,000 $ 36,800,000 Required: 1. Compute the margin for Magnetic Imaging Corporation. (Round your answer to 2 decimal places.) 2. Compute the turnover for Magnetic Imaging Corporation. (Round your answer to 2 decimal places.) 3. Compute the return on investment (ROI) for Magnetic Imaging Corporation. (Round your intermediate calculations and final answer to 2 decimal places.)