A mechanical engineer who designs and sells equipment that automates manual labor processes is offering a machine/robot combination that will sig­nificantly reduce labor costs associated with manu­facturing garage-door opener transmitters. The equipment has a first cost of $170,000, an estimated annual operating cost of $54,000, a maximum use­ful life of 5 years, and a $20,000 salvage value any­time it is replaced. The existing equipment was pur­chased 12 years ago for $65,000 and has an annual operating cost of $78,000. At most, the currently owned equipment can be used 2 more years, at which time it will be auctioned off for an expected amount of $6000, less 33% paid to the company handling the auction. The same scenario will occur if the currently owned equipment is replaced now.

Determine the defender and challenger estimates of P, n, S, and AOC in conducting a replacement anal­ysis today at an interest rate of 20% per year.

What will be an ideal response?


Defender:
P = market value = 6000(1 – 0.33) = $4000
AOC = $78,000 per year
n = 2 years
S = 6000(1 – 0.33) = $4000
Challenger:
P = $170,000
AOC = $54,000 per year
n = 5 years
S = $20,000

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