Coolbrook Company has the following information available for the past year: River Division Stream Divisionn Sales revenue $ 1,213,000 $1,804,000 Cost of goods sold and operating expenses Net operating income Average invested assets 896,000 1,296,000 $317,000 $ 508,000 $1,100,000 $ 1,420,000 The company's hurdle rate is 7.76 percent. Required 1. Calculate return on investment (ROl) and residual income for each division for last year. (Do not round your intermediate calculations. Round "ROl" answers to 2 decimal places.) River DIvision Stream DIvision ROI Residual Income 2. Recalculate ROI and residual income for each division for each independent situation that follows a. Operating income increases by 11 percent. (Do not round your intermediate calculations. Round "ROI" ans swers to 2 decimal places.) River DIvision Stream DIvision ROI Residual Income b. Operating income decreases by 9 percent. (Do not round your intermediate calculations. Round "ROI" answers to 2 decimal places.) River DIvision Stream DIvision ROI Residual Income