Coolbrook Company has the following information avaliable for the past year: The company's hurdle rate is 6 percent. Required: 1. Calculate return on investment (ROI) and residual income for each division for last year. (Enter your ROI answers as a percentage rounded to two decimal places, (i.e., 0.1234 should be entered as 12.34%.)) 2. Recalculate ROI and residual income for each division for each independent situation that follows: (Enter your ROI answers as a percentage rounded to two decimal places, (i.e., 0.1234 should be entered as 12.34%.)) a. Operating income increases by 10 percent. b. Operating income decreases by 10 percent. c. The company invests $250,000 in each division, an amount that generates $100,000 additional income per division. d. Coolbrook changes its hurdle rate to 10 percent