You have two machines under consideration for an improved automated wrapping process for Snick­ers Fun Size candy bars as detailed below. (a) Using an AW analysis, determine which should be selected at i = 15% per year. (b) Assume you want machine D to be selected and are willing to extend its estimated life, if necessary. Perform this analysis to ensure D’s selection using factors or a spreadsheet.


(a) AWC = -40,000(A/P,15%,3) – 10,000 + 12,000(A/F,15%,3)

= -40,000(0.43798) – 10,000 + 12,000(0.28798)

= $-24,063



AWD = -65,000(A/P,15%,6) – 12,000 + 25,000(A/F,15%,6)

= -65,000(0.26424) – 12,000 + 25,000(0.11424)

= $-26,320



Select machine C

(b) Factors: Set AWD = AWC with nD as an unknown.



-24,063 = -65,000(A/P,15%,nD) – 12,000 + 25,000(A/F,15%,nD)



Solve by trial and error; nD is between 9 and 10 years. An expected life of 10 years will

indicate D as selected.



Spreadsheet: Use Goal Seek tool to display 9.15 years

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