Westerville Company reported the following results from last year's operations: Sales Variable expenses $1,500,000 730.000 Contribution margin Fixed expenses 770.000 470,000 Net operating income $ 300,000 Average operating assets $ 937,500 This year the company has a $362,500 investment opportunity with the following cost and revenue characteristics: Sales Contribution margin ratio Fixed expenses $580,000 70 % of sales $319,000 The company's minimum required rate of return is 10%. Required: What is the margin related to this year's investment opportunity? Margin