How do I find the formulas for the answers?

D1 . x fx A C D E F G H Name Insert Function 1 Excel #9 2 ROI and Residual Income 3 4 Enter a formula or cell reference in every yellow cell. 5 6 The following data pertains to the Tracey Company: 7 Data 8 Sales $25,000 9 Net operating income $3,000 10 Average operating assets $10,000 11 Minimum required rate of return 25% 12 13 Compute the ROI 14 12% 2.5 30% 15 Margin 16 Turnover 17 ROI 18 19 20 Compute the residual income 21 22 Average operating assets 23 Minimum required rate of return Minimum required rate of return on 24 average operating assets $10,000 25 26 27 Net operating income This is what you got in Cell B24 Minimum required rate of return on 28 average operating assets 29 Residual income 30 31