Westerville Company reported the following results from last year's operations: Sales Variable expenses Contribution margin Fixed expenses Net operating income Average operating assets $ 2,200,000 660,000 1,540,000 1,100,000 $ 440,000 $ 1,375,000 At the beginning of this year, the company has a $275,000 investment opportunity with the following cost and revenue characteristics: Sales Contribution margin ratio Fixed expenses $ 440,000 60 % of sales $ 220,000 The company's minimum required rate of return is 15%. Required: 1. What is last year's margin? Margin % 2. What is last year's turnover? (Round your answer to 1 decimal place.) Turnover 3. What is last year's return on investment (ROI)? ROI % 4. What is the margin related to this year's investment opportunity? Margin % 5. What is the turnover related to this year's investment opportunity? (Round your answer to 1 decimal place.) Turnover