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	$ 17,900,000
Net operating income	$ 6,100,000
Average operating assets	$ 35,600,000

1. Compute the margin for Alyeska Services Company.

2. Compute the turnover for Alyeska Services Company.

3. Compute the return on investment (ROI) for Alyeska Services Company.