! Required Information [The following information applies to the questions displayed below.] Westerville Company reported the following results from last year's operations: Sales $ 1,609, 080 Variable expenses 790, 090 Contribution margin 909, 080 Fixed expenses 660, 980 Net operating income $ 240, 980 Average operating assets At the beginning of this year, the company has a $325,000 investment opportunity with the following cost and revenue characteristics: Sales $ 520,080 Contribution margin ratio 70% of sales Fixed expenses $ 312, 080 The company's minimum required rate of return is 15%