Return on investment is often expressed as follows: X ROI= Controllable margin = Controllable margin Sales Average operating asset. Sales Average operating assets. Required a. What would be the advantages of doing the ROI calculation as two separate components. b. 1. There are 3 companies operating in the same industry. Their comparative information is in the table below. If the minimum required ROI is 10% for all three companies, determine the amounts that are omitted in the table. Jones Smith Johnson Sales $1,000,000 $500,000 (a) Net operating income $ 100,000 $ 50,000 (b) Average operating assets $ 500,000 (c) $5,000,000 Profit margin (d) 0.5% Asset turnover (1) (9) 2 Return on investment 1% (0) Residual income (1) (k) (1) 2. For all three companies compare and contrast the performance, with reference to their relative performance as measured by the ROI and residual income