Alyeska Services Company, a division of a major oil company, provides various services to the operators of the North Slope oil field in Alaska. Data concerning the most recent year appear below: Sales Net operating income Average operating assets $ 7,500,000 $ 600,000 $ 5,000,000 Required: 1. Compute the margin for Alyeska Services Company. 2. Compute the turnover for Alyeska Services Company. (Round your answer to 1 decimal place.) 3. Compute the return on investment (ROI) for Alyeska Services Company. (Do not round intermediate calculations.) 1. Margin 2. Turnover 3. ROI