Required information The Foundational 15 (Algo) (LO11-1, LO11-2] (The following information applies to the questions displayed below.) Westerville Company reported the following results from last year's operations: Sales Variable expenses Contribution margin Fixed expenses Net operating income Average operating assets $ 1,750,000 520,000 1,230,000 880,000 $ 350,000 $ 875,000 At the beginning of this year, the company has a $200,000 investment opportunity with the following cost and revenue characteristics: Sales Contribution margin ratio Fixed expenses $ 320,000 60% of sales $ 128,000 The company's minimum required rate of return is 20%. 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