Coolbrook Company has the following information available for the past year: The company's hurdle rate is 6.76 percent. Required: 1. Calculate return on investment (ROI) and residual income for each division for last year. 2. Recalculate ROI and residual income for each division for each independent situation that follows: a. Operating income increases by 10 percent. b. Operating income decreases by 10 percent. c. The company invests $258,000 in each division, an amount that generates $114,000 additional income per division. d. Coolbrook changes its hurdle rate to 4.76 percent. Coolbrook Company has the following information available for the past year: The company's hurdle rate is 6.76 percent. Required: 1. Calculate return on investment (ROI) and residual income for each division for last year. 2. Recalculate ROI and residual income for each division for each independent situation that follows: a. Operating income increases by 10 percent. b. Operating income decreases by 10 percent. c. The company invests $258,000 in each division, an amount that generates $114,000 additional income per division. d. Coolbrook changes its hurdle rate to 4.76 percent