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Managers must oen decide between two or more alternatives. Differential analysis is used in decision making. When using differential analysis, it is important to only include those amounts that are different between the alternatives. Differential cost is subtracted from differentiai revenue to determine differential incomeoss. when calculating differential cost, the only costs that should be included are: v For example, manufacturing companies often assemble components into a nished product. These components can be purchased from a supplier or produced within the company. The decision to produce the component or buy it is often referred to as a make-crow dedsmn and uses differential analysis to assist in the decision-making process. Differential analysis is only one step in deciding to make or buy the product. Management must also take into consideration nonquantitative data. If the company has been making the product, will it lay off employees if it starts buying the product? If so, will this hurt the company's reputation? If parts required for making the components will be obtained from an outside source, is that source reliable? These nonquantitative issues will influence the success or failure of a make-or-buy decision. APPLY THE CONCEPTS: calculating per-unit manufacturing cost: In a make-nr-buy declslon Len Corporation, a high-end digital camera manufacturer, currentiy purchases a component part from an outside company at a price of 5221 per unit. While the quality of the component has always been very high, Len Corporation's management believes it might be possible to produce a superior component internally at a cost lower than $221. The accounting department has provided an estimate of the per-unit manufacturing cost of the component. Direct materials 82 Direct labor 75 Variable factory overhead 35 Fixed factory overhead SD $272 The company's controller believes that the estimate may be incorrect, because Len Corporation has excess manufacturing capacity to produce the components without incurring additional xed factory overhead. What per-unit manufacturing cost should be used in determining whether Len Corporation should purchase the components from an outside company or manufacture them internally? 5:] APPLY THE CONCEPTS: Calculating differential income in a make-or-buy decision Complete the table below to compare the per-unit cost for Len Corporation to make the component and the per-unit cost to buy the component. Make or Buy Decisions Purchase price of an instrument panel Differential cost to manufacture: Direct materials Direct labor Variable factory overhead Cost savings from manufacturing an instrument panel Based on your analysis, it is better for Len Corporation to the component. Doing so will save the company $ per unit