Please help with ROI, Residual Income and EVA. See attached.

23.36 RCI, inc is a decentralized organization with four autonomous divisions. The divisions are evaluated on the basis of the change in their return on invested assets. Operating results in the Commercial Division for the 2012 follow: RCI Inc.-Commercial Division Income Statement For Year Ending December 31, 2012 Sales.....$3,125,000 Less variable expense.....(1,600,000) Contribution margin.....1,525,000 Less fixed expenses.....(1,000,000) Net Operating Income.....$525,000 Operating assets for the Commercial Division currently average $2,500,000. The commercial division can add a new product line for an investment of $300,000. Relevant data for the new product line are as follows: Sales...$800,000 Variable expenses (% of sales).....0.60 Fixed expenses....$275,000 Increase in current liabilities....$20,000 REQUIRED a. Determine the effect on ROI of accepting the new product line. (round calculations to three decimal places). b. If a return of 6% is the minimum that any division should earn and residual income is used to evaluate managers, would this encourage the division to accept the new product line? Explain and show computations. c. If EVA is used to evaluate managers, should the new product line be accepted if the weighted average cost of capital is 8% and the income tax rate is 40%