omework Saved Help Westerville Company reported the following results from last year's operations $ Sales Variable expenses Contribution margin Fixed expenses Net operating income Average operating assets 2.300.000 670,000 1,630,000 1.170.000 460,000 $ $ 1,437,500 At the beginning of this year, the company has a $287,500 investment opportunity with the following cost and revenue characteristics: Sales Contribution margin ratio Fixed expenses S460,000 50 % of sales $ 161,000 The company's minimum required rate of return is 15%. 4. What is the margin related to this year's investment opportunity