A specialty concrete mixer used in construction was purchased for $270,000 7 years ago. It is MACRS-GDS 5-year property. Its annual O&M costs are $110,000. At the end of an 8-year planning horizon, the mixer will have a salvage value of $5,250. If the mixer is replaced, a new mixer will require an initial investment of $375,000, and at the end of the 8-year planning horizon, the new mixer will have a salvage value of $45,000. Its annual O&M cost will be only $40,000 due to newer technology. Use an EUAC measure, a tax rate of 40 percent, and an after-tax MARR of 9 percent to perform an after-tax analysis to see if the concrete mixer should be replaced if the old mixer is sold for its market value of $67,000.

1. Use the cash flow approach (insiders viewpoint approach).

Replace concrete mixer? (yes/no)

Show the EUAC values used to make your decision: a) Keep existing concrete mixer: $

b) Replace with new concrete mixer: $

2. Use the opportunity cost approach (outsiders viewpoint approach)

Replace concrete mixer?(yes/no)

Show the EUAC values used to make your decision:

a)Keep existing concrete mixer: $

b)Replace with new concrete mixer: $