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 $ 7,500,000 Net operating income $ 600,000 Average operating assets $ 5,000,000 Required: 1. Compute the margin. 2. Compute the turnover. (Round your answer to 1 decimal place.) 3. Compute the return on investment (ROI). (Do not round intermediate calculations.

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends > a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?