! Required information (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 $ 1,200,000 420,000 780,000 600,000 $ 180,000 $ 600,000 At the beginning of this year, the company has a $137,500 investment opportunity with the following cost and revenue characteristics: Sales Contribution margin ratio Fixed expenses $ 220,000 60% of sales $ 99,000 The company's minimum required rate of return is 20%. 12. What is the residual income of this year's investment opportunity? Residual income $ 12,000