Can you help me determine the margin, turnover and ROI for this example?

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	$	17,000,000
Net operating income	$	5,300,000
Average operating assets	$	35,100,000

1.	Margin		%
2.	Turnover
3.	ROI		%