Dexcon Technologies, Inc. is evaluating two alter­natives to produce its new plastic filament with tribological (i.e., low friction) properties for creat­ing custom bearings for 3-D printers. The esti­mates associated with each alternative are shown below. Using a MARR of 20% per year, which al­ternative has the lower present worth?


PWDDM = -164,000 – 55,000(P/A,20%,4) – 164,000(P/F,20%,2)
= -164,000 – 55,000(2.5887) – 164,000(0.6944)
= $-420,260

PWLS = -370,000 – 21,000(P/A,20%,4) + 30,000(P/F,20%,4)
= -370,000 – 21,000(2.5887) + 30,000(0.4823)
= $-409,894

Select method LS

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