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EXERCISE 25,10 City Wide Door ROI and Residual Income Emily Adams is the manager of Ciry Wide Door, a company specializing in installing and maintaining garage doors of many types. Her associate, Alyssa, has provided Eimily with three proposals for different imestments in machinery to help expand the busmess. The minimum required return on investments for City Wide Door is 18 percent If Emily uses ROI to evaluate investments a. Which proposal would be most profitable for the firms' b. How would the answer change if the company used residual income fo evaltate investments