Need answers to three question. I only have half of the answers correct. ROI and Residual Income:

ROI and Residual Income:Basic Computations
Watkins Associated Industries is a highly diversified company with three divisions: Trucking, Seafood, and Construction. Assume that the company uses return on investment and residual income as two of the evaluation tools for division managers. The company has a minimum desired rate of return on investment of 10 percent with a 30 percent tax rate. Selected operating data for three divisions of the company follow.
Trucking DivisionSeafood DivisionConstruction DivisionSales\$1,000,000\$690,000\$900,000Operating assets500,000230,000380,000Net operating income99,00058,00057,000
(a) Compute the return on investment for each division. (Round answers to three decimal places.)
(b) Compute the residual income for each division.Residual IncomeTruckingSeafoodConstructionNet operating income\$Answer
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ROI and Residual Income:
Impact of a New Investment
The Mustang Division of Detroit Motors had an operating income of \$700,000 and net assets of \$4,000,000. Detroit Motors has a target rate of return of 16 percent.
(a) Compute the return on investment. (Round your answer to three decimal places.)
(b) Compute the residual income.
(c) The Mustang Division has an opportunity to increase operating income by \$200,000 with an \$950,000 investment in assets.
1. Compute the Mustang Division’s return on investment if the project is undertaken. (Round your answer to three decimal places.)