Given the following data: Average operating assets $125,000 Total liabilities $ 50,000 Sales $300,000 Contribution margin $ 75,000 Net operating income $ 20,000 The company's required minimum return is 12% Required: Calculate the following: Show your work. 1. Margin 2. Turnover 3. Return on investment 4. Residual income 5. If the manager is evaluated based on ROI, what is the minimum return each new project would be required to yield? 6. If the manager is evaluated based on residual, what is the minimum required return that each new project would be required to yield