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 $ 18,100,000 $4,500,000 $ 35,300,000 Required: 1. Compute the margin (Round your answer to 2 decimal places.) 2. Compute the turnover (Round your answer to 2 decimal places.) 3. Compute the return on investment (ROI). (Round your intermediate calculations and final answer to 2 decimal places.) 1. Margin 2. Tumover 3. ROI