and 80 percent of fixed production costs will be eliminated. Regardless of the decision to outsource or to produce internally, 20 percent of fixed production costs will remain . Required: a. Perform differential analysis using the format presented in . Assume making windshields internally is Alternative 1, and buying windshields from an outside manufacturer is Alternative 2. b. Which alternative is best? Explain. c. Summarize the result of outsourcing production using the format presented