Assume a company reported the following results: 4 Sales Variable expenses Contribution margin Fixed expenses Net operating income Average operating assets $400,000 260,000 140,000 40,000 $100,000 $300,000 The return on investment (ROI) is closest to: The return on investment (RON) is closest to: 4 Muistiple Choice 35.0% 22.0% 133.3% 33.3%