At the beginning of this year, the company has a $120,000 investment opportunity with the following cost and revenue characteristics: Sales Contribution margin ratio $200,000 60% of sales Fixed expenses $90,000 The company's minimum required rate of return is 15%. Required: 1. What is last year's margin? 2. What is last year's turnover? 3. What is last year's return on investment (ROI)? 4. What is the margin related to this year's investment opportunity? 5. What is the turnover related to this year's investment opportunity? 6. What is the ROI related to this year's investment opportunity?