Revise the data in your worksheet as follows: B A 1 Chapter 10: Applying Excel N 4 3 Data Sales 5 Net operating income 6 Average operating assets Minumum required rate of return $ 30,000,000 $ 2,400,000 $ 10,000,000 7 11% If your formulas are correct, you should get the correct answers to the following questions. a. What is the ROI? ROI % b. What is the residual income? (Negative amount should be indicated by a minus sign.) Residual income c. Why is the residual income positive