PA10-1 (Algo) Calculating Return on Investment, Residual Income, Determining Effect of Changes in Sales, Expenses, Invested Assets, Hurdle Rate on Each [LO 10-4, 10-5] Coolbrook Company has the following information available for the past year: River Division Stream Division Sales revenue $ 1,215,000 $ 1,808,000 Cost of goods sold and operating expenses 888,000 1,289,000 Net operating income $ 327,000 $ 519,000 Average invested assets $ 1,070,000 $ 1,590,000 The companys hurdle rate is 7.51 percent. Required: Calculate return on investment (ROI) and residual income for each division for last year. Recalculate ROI and residual income for each division for each independent situation that follows: Operating income increases by 10 percent. Operating income