Westerville Company reported the following results from last year's operations This year, the company has a $300,000 investment opportunity with the following cost and revenue characteristics: The company's minimum required rate of return is 15%. What is last year's margin? What is last year's turnover? What is last year's return on investment (ROI)? What is the margin related to this year's investment opportunity? What is the turnover related to this year's investment opportunity? What is the ROI related to this year's investment opportunity? If the company pursues the investment opportunity and otherwise performs the same as last year, what margin will it earn this year? If the company pursues the investment opportunity and otherwise performs the same as last year, what turnover will it earn this year? If the company pursues the investment opportunity and otherwise performs the same as last year, what ROI will it earn this year? What is last year's residual income? What is the residual income of this year's investment opportunity? If the company pursues the investment opportunity and otherwise performs the same as last year, what residual income will it earn this year