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:

Required:

Compute the margin. $($Round your answer to $2$ decimal places.$)$

Compute the turnover. $($Round your answer to $2$ decimal places.$)$

Compute the return on investment $($ROI$).($Round your intermediate calculations and final answer to $2$ decimal places.$)$