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 5P
To determine
Calculate the equivalent annual value.
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Assume the MARR is 10% per year for this analysis. A presently owned machine that was purchased 8 years ago for $450,000 is under consideration for replacement. It has an annual operating cost of $120,000 per year and a salvage value of $40,000 whenever it is replaced. The challenger has a first cost of $670,000, an expected annual operating cost of $94,000, and a salvage value of $60,000 after its 10-year economic life. The breakeven market value of the presently owned machine required to make the AW values of the two machines the same, if the presently owned machine is kept for 5 more years and then replaced with the challenger that has the same AW, is closest to: (a) $196,340 (b) $255,390 (c) $325,360 (d ) $394,770
In a replacement analysis for a vacuum seal on a spacecraft, the following data are known about the challenger: the initial investment is $12,000, there is no annual maintenance cost for the first
three years, however, it will be $2000 in each of years four and five, and then $4500 in the sixth year and increasing by $2500 each year thereafter. The salvage value is $0 at all times, and
MARR is 12% per year. What is the economic life of this challenger? Present your solution in table form as follows: Show complete calculations for EUAC.
EOY
MVK
loss in MV
Cost of
Annual
Total Cost
EUAC
During year k
Сaptal
expenses
through year k
An engineer calculated the AW values shown for retaining a presently owned
machine additional years.
A challenger has an ESL of 4 years with AW = $-60,000 per year.
Assuming all future costs remain the same, when should the company replace the
defender?
The MARR is 12% per year. Assume used machines like the one presently owned
will always be available.
Years Retained
12345
a) at year 5
b) at year 4
c) at year 1
d) at year 3
AW of Defender,
$
-77,000
-63,000
-58,000
-64,000
-70,000
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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- A company with a MARR of 10% must install one of two production machines. The economic parameters of each machine are as follows: Machine X Y Initial cost ($) $15,000 $22,000 Service life (years) 4 years 6 years Salvage value end of life ($) $2,000 $1,000 The Future worth (FW) for the machine Y over the 12 years analysis period is:arrow_forwardA CNC machine which was purchased five years ago for $170,000 is being considered for replacement. Its current first cost is estimated to be $130,000. Its AOC is $75,000 in year one and increasing by $4,000 each year. Its salvage value is $15,000 regardless of when the asset is retired. Using a MARR of 10% per year, determine the ESL and the respective AW. Its maximum useful life is three years.arrow_forwardDigital Tech Dynamics purchased a new quality inspection system for $550,000. The estimated salvage value was $50,000 after 10 years. Currently, the expected remaining life is 7 years with an AOC of $67,500 per year and an estimated salvage value of $40,000. The new president has recommended early replacement of the system with one that costs $430,000 and has a 12-year economic service life, a $35,000 salvage value, and an estimated AOC of $50,000 per year. If the MARR for the corporation is 12% per year, use factor-based relations to determine the minimum trade-in value necessary now to make the president's replacement economically advantageous. The minimum trade-in value necessary now to make the president's replacement economically advantageous is $[arrow_forward
- Machine “A” has a starting cost of $ 50,000 with an estimated period of 12 years and a salvage value of $ 14,000. Annual O&M costs are $ 6,000 the first year, $ 6,300 the second year, and so on. Another Alternative is machine “B” which has an initial cost of $ 30,000 and a recovery value of $ 3,000 at the end of the 12-year service period, the annual operating and maintenance expenses are $ 8,000 the first year, from $ 8,500 the second year and so on. Using an interest rate of 13% per year. Do a Present Value analysis, and determine the value of machine Aarrow_forwardVeritas Inc. has decided to acquire a new Hydraulic Excavator. It has three options. Caterpillar: purchase cost of $354,055 and operating costs of $28,121 per year (paid at the end of each year). John Deere: purchase cost of $288,413 and operating costs of $21,091 per year (paid at the end of each year). Volvo: purchase cost of $323,238 and operating costs of $15,484 per year (paid at the end of each year). Assume that Geek Inc. has a budget of $335,269 and all excavators have a service life of 13 years. Based on the defender-challenger approach and given that the MARR is 10%, compute the incremental Benefit-Cost ratio of choosing the best excavator (note: round your answer to two decimal places; do not include spaces, dollar signs, or commas). Indicate your recommendation as follows: - answer "0" (without the commas) if your recommendation is the Caterpillar; - answer "1" (without the commas) if your recommendation is the John Deere; - write down as your answer the value of the…arrow_forwardAn engineer calculated the AW values shown for retaining a presently owned machine additional years. A challenger has an ESL of 4 years with AW = $-60,000 per year. Assuming all future costs remain the same, when should the company replace the defender? The MARR is 12% per year. Assume used machines like the one presently owned will always be available. AW of Defender, 2$ |-77,000 |-63,000 |-58,000 -64,000 -70,000 Years Retained 1 2 3 4 O a) at year 5 O b) at year 4 c) at year 1 d) at year 3arrow_forward
- A company that makes micro motion compact coriolis meters purchased a new packaging system for $600,000. The estimated salvage value was $28,000 after 10 years. Currently the expected remaining life is 7 years with an AOC of $27,000 per year and an estimated salvage value of $40,000. The company is considering early replacement of the system with one that costs $370,000, has a 12-year economic service life, a $22,000 salvage value, and an estimated AOC of $50,000 per year. The MARR for the corporation is 12% per year. (a) Determine the minimum trade-in value necessary now to make the replacement economically advantageous. (b) Write the spreadsheet functions necessary to determine RV using Goal Seek.arrow_forwardIn a replacement analysis problem, the following information is available Initial cost : 12.000 YTL Annual maintenance cost: None in the first three years 2.000 YTL at the end of the 4th year 2.000 YTL at the end of the 5th year 2,500 YTL per year after the 5th year will increase smoothly (at the end of the 6th year, 4.500 YTL 7.000 YTL at the end of the 7th year, etc. The scrap value in any given year is zero. Take the discount rate of 10% and ignore income taxes. Calculate the most economical life for this candidate equipment. A) 6 B) 2 C) 5 D) 8 E) 4arrow_forwardAn engineer calculated the AW values shown for retaining a presently owned machine additional years. A challenger has an ESL of 4 years with AW = $-60,000 per year. Assuming all future costs remain the same, when should the company replace the defender? The MARR is 12% per year. Assume used machines like the one presently owned will always be available. AW of Defender, 24 -77,000 -63,000 Years Retained 1 12 -58,000 -64,000 -70,000 13 4 a) at year 5 b) at vear 2 always be available. AW of Defender, 2$ |-77,000 -63,000 -58,000 -64,000 -70,000 Years Retained 3 4 15 O a) at year 5 b) at year 2 c) at year 1 d) at year 4 e) at year 3arrow_forward
- A large, standby electricity generator in a hospital operating room has a first cost of $70,000 and may be used for a maximum of 6 years. Its salvage value, which decreases by 15% per year, is described by the equation S = 70,000(1 − 0.15)n, where n is the number of years after purchase. The operating cost of the generator will be constant at $75,000 per year. At an interest rate of 12% per year, what is the economic service life and associated AW value?arrow_forwardA CNC mill was purchased 4 years ago for $60,000. Even though it is still a productive machine, a better machine is now on the market that can be bought for $80,000. The new machine will increase the benefit by reducing the annual operating costs. Operating cost and book values are shown below for both machines. (MARR=15%) Obtain the EAC of capital cost and EAC of operating cost for both defender and challenger over the years and draw the curves in Excel including the EAC of total costs. Obtain the economic life associated with the minimum EAC of total costs for both defender and challenger Is it worth replacing the machine if the machine is required only for the next 4 years? Defender Challenger Year Op. Cost ($) Book Value ($) Op. Cost ($) Book Value ($) 32,000 80,000 4200 24,000 700 68,000 4500 15,000 1100 61,000 3 4900 7,500 1500 56,000 4 5200 2,500 1900 52,000 5 2300 40,000 6 2700 20,000arrow_forwardMARR = 12%. This asset is similar across some other asset replacement questions: An asset has a first cost of $90,000 and is expected to lose $5,000 in market value each year, until the asset has a 0$ market value. O&M costs for the first and second year are expected to be zero, but in the third year the repair costs are expected to be $10,000 and increase by 20% per year thereafter. There is a required maintenance in the 5th year of $20,000. EAC6 is within $250 of which of the following? 23,460 23,960 24,460 24,960 25,460 None of the abovearrow_forward
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