Required information [The following information applies to the questions displayed below Westerville Company reported the following results from last year's operations 1,488,e 06e,889 Sales Variable expenses Contribution margirn Fixed expenses Net operating income 728,800 440,000 $ 288,888 Average operating assets 875,800 At the beginning of this year, the company has a $300.000 investment opportunity with the following cost and revenue characteristics: sales Contribution nargin ratio Fixed expenses sex of sales $ 336 , eee The company's minimum required rate of return is 15% 3 what is last years return on investment (RO0? (Round your intermediate calculetions to 1 decimal place.)