The Empire Hotel is a full-service hotel in a large city. Empire is organized into three departments that are treated as investment centers. Budget information for the coming year for these three departments is shown as follows. The managers of each of the departments are evaluated and bonuses are awarded each year based on ROl. Empire Hotel Hotel Rooms $ 10,000,000 $ 11,250,000 Restaurants Health Spa $ 1,250,000 2,500,000800,009 650,000 S 150,000 6,250,000 Average investment Sales revenue Operating expenses Operating earnings 9,450,0001,625,000 $ 875,000 $ 1,800,000 Required a. Compute the ROl for each department. Use the DuPont method to analyze the return on sales and capital turnover. Assume the Health Spa is considering installing new exercise equipment. Upon investigating, the manager of the division finds that the equipment would cost $60,000 and that operating earnings would increase by $10,800 per year as a result of the new equipment. b-1. What would be the ROl of investment in the new exercise equipment and Health Spa? b-2. Would the manager of the Health Spa be motivated to undertake such an investment? c-1. Compute the residual income for each department if the minimum required return for the Empire Hotel is 15 percent. c-2. What would be the impact of the investment on the Health Spa's residual income