Engineering Economy (16th Edition) - Standalone book
16th Edition
ISBN: 9780133439274
Author: William G. Sullivan, Elin M. Wicks, C. Patrick Koelling
Publisher: PEARSON
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Chapter 9, Problem 8P
A city water and waste-water department has a four-year-old sludge pump that was initially purchased for $65,000. This pump can be kept in service for an additional four years, or it can be sold for $35,000 and replaced by a new pump. The purchase price of the replacement pump is $50,000. The projected MVs and operating and maintenance costs over the four-year planning horizon are shown in the table that follows. Assuming the MARR is 10%, (a) determine the economic life of the challenger and (b) determine when the defender should be replaced.
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PROBLEM:
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If capital costs the company about 25%, would you recommend the…
A city water and waste-water department has a four-year-old sludge pump that was initially purchased for $65,000. This pump can be kept in service for an additional four years, or it can be sold for $36,500 and
replaced by a new pump. The purchase price of the replacement pump is $48,000. The projected MVs and operating and maintenance costs over the four-year planning horizon are shown in the table that follows.
Assuming the MARR is 12%, (a) determine the economic life of the challenger and (b) determine when the defender should be replaced.
Defender
Challenger
Year
MV at EOY
O&M Costs
MV at EOY
O&M Costs
1
$25,000
$17,500
$42,000
$12000
15,000
18,000
21,000
2
21,500
18,000
14,500
20,500
23,500
34,500
27,000
19,500
3
4
26,500
Click the icon to view the interest and annuity table for discrete compounding when the MARR is 12% per year.
...
a. The economic life of the challenger is
year(s). (Round to the nearest whole number.)
It is being decided whether or not to replace an existing piece of equipment with a newer, more productive one that costs $80,000 and has an estimated MV of $20,000 at the end of its useful life of six years. Installation charges for the new equipment will amount to $3,000; this is not added to the capital investment but will be an expensed item during the first year of operation. MACRS (GDS) depreciation (five-year property class) will be used. The new equipment will reduce direct costs (labor, maintenance, rework, etc.) by $10,000 in the first year, and this amount is expected to increase by $500 each year thereafter during its six-year life. It is also known that the BV of the fully depreciated old machine is $0 butthat its present fair MV is $14,000. The MV of the old machine will be zero in six years. The effective income tax rate is 40%. Solve, a. Determine the prospective after-tax incremental cash flow associated with the new equipment if it is believed that the existing…
Chapter 9 Solutions
Engineering Economy (16th Edition) - Standalone book
Ch. 9 - Prob. 1PCh. 9 - Prob. 2PCh. 9 - Prob. 3PCh. 9 - Prob. 4PCh. 9 - Prob. 5PCh. 9 - Prob. 6PCh. 9 - Prob. 7PCh. 9 - A city water and waste-water department has a...Ch. 9 - Prob. 9PCh. 9 - Prob. 10P
Ch. 9 - Prob. 11PCh. 9 - Prob. 12PCh. 9 - Use the PW method to select the better of the...Ch. 9 - Prob. 14PCh. 9 - Prob. 15PCh. 9 - Prob. 16PCh. 9 - Prob. 17PCh. 9 - Prob. 18PCh. 9 - Prob. 19PCh. 9 - Prob. 20PCh. 9 - Prob. 21PCh. 9 - Prob. 22PCh. 9 - Prob. 23PCh. 9 - Prob. 24PCh. 9 - Prob. 25PCh. 9 - Prob. 26PCh. 9 - Prob. 27SECh. 9 - Prob. 28SECh. 9 - Prob. 29CSCh. 9 - Prob. 30CSCh. 9 - Prob. 31CSCh. 9 - Prob. 32FECh. 9 - Prob. 33FECh. 9 - Prob. 34FECh. 9 - Prob. 35FECh. 9 - Prob. 36FE
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