Alyeska Services Company, a division of a major oil company, provides various services to the operators of the North Siope oil field in Alaska. Data concerning the most recent year appear below: 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 colculations and final answer to 2 decimal places.)