ENGINEERING ECONOMIC ENHANCED EBOOK
14th Edition
ISBN: 9780190931940
Author: NEWNAN
Publisher: OXF
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Chapter 13, Problem 46P
To determine
To assess: The best option.
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Evaluate to total present worth of all the cash-flow of machine ABC for an interest rate of 10% per year. Relevant costs are as follows
investment cost = $18,000
useful life = 20 years
Market value = $5000
Annual operating expenses =$250
Overhead cost end of the 7th year = $500
Overhead cost end of the 14th year = $800
The AW values for retaining a presently owned machine for additional years are shown in the table. Note that the values represent the
AW amount for each of the n years that the asset is kept, i.e., if it is kept 5 more years, the annual worth is $-95,000 for each of the 5
years. Assume that future costs remain as estimated for the replacement study and that used machines like the one presently owned
will always be available.
(a) What is the ESL and associated AW of the defender at a MARR of 12% per year?
(b) A challenger with an ESL of 7 years and an AWC = $-87,000 per year has been identified. Which AW will be less for the respective
ESL periods?
Retention Period, Years
AW Value, $ per Year
1
-80,000
-93,000
3.
-82,000
4
-92,000
-95,000
a) The ESL of the defender is
year(s) with the lowest AW of S
b) The defender
has the lower AW at S
for n equal to
Chapter 13 Solutions
ENGINEERING ECONOMIC ENHANCED EBOOK
Ch. 13 - Prob. 1QTCCh. 13 - Prob. 2QTCCh. 13 - Prob. 3QTCCh. 13 - Prob. 4QTCCh. 13 - Prob. 5QTCCh. 13 - Prob. 1PCh. 13 - Prob. 2PCh. 13 - Prob. 3PCh. 13 - Prob. 4PCh. 13 - Prob. 5P
Ch. 13 - Prob. 6PCh. 13 - Prob. 7PCh. 13 - Prob. 8PCh. 13 - Prob. 9PCh. 13 - Prob. 10PCh. 13 - Prob. 11PCh. 13 - Prob. 12PCh. 13 - Prob. 13PCh. 13 - Prob. 14PCh. 13 - Prob. 15PCh. 13 - Prob. 16PCh. 13 - Prob. 17PCh. 13 - Prob. 18PCh. 13 - Prob. 19PCh. 13 - Prob. 20PCh. 13 - Prob. 21PCh. 13 - Prob. 22PCh. 13 - Prob. 23PCh. 13 - Prob. 24PCh. 13 - Prob. 25PCh. 13 - Prob. 26PCh. 13 - Prob. 27PCh. 13 - Prob. 28PCh. 13 - Prob. 29PCh. 13 - Prob. 30PCh. 13 - Prob. 31PCh. 13 - Prob. 32PCh. 13 - Prob. 33PCh. 13 - Prob. 34PCh. 13 - Prob. 35PCh. 13 - Prob. 36PCh. 13 - Prob. 37PCh. 13 - Prob. 38PCh. 13 - Prob. 39PCh. 13 - Prob. 40PCh. 13 - Prob. 41PCh. 13 - Prob. 42PCh. 13 - Prob. 43PCh. 13 - Prob. 44PCh. 13 - Prob. 45PCh. 13 - Prob. 46PCh. 13 - Prob. 47PCh. 13 - Prob. 48PCh. 13 - Prob. 49PCh. 13 - Prob. 50PCh. 13 - Prob. 51PCh. 13 - Prob. 52PCh. 13 - Prob. 53PCh. 13 - Prob. 54PCh. 13 - Prob. 55PCh. 13 - Prob. 56P
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- help please answer in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all workingarrow_forwardThe AW values for retaining a presently owned machine for additional years are shown in the table. Note that the values represent the AW amount for each of the n years that the asset is kept, i.e., if it is kept 5 more years, the annual worth is $−95,000 for each of the 5 years. Assume that future costs remain as estimated for the replacement study and that used machines like the one presently owned will always be available. (a) What is the ESL and associated AW of the defender at a MARR of 12% per year? (b) A challenger with an ESL of 7 years and an AWC = $-90,000 per year has been identified. Which AW will be less for the respective ESL periods? Retention Period, Years AW Value, $ per Year 1 -89,000 2 -95,000 3 -86,000 4 -85,000 5 -95,000 a) The ESL of the defender is ____year(s) with the lowest AW of $_____. b) The (Click to select defender challenger) has the lower AW at $______for n equal to ____ .arrow_forwardThe AW values for retaining a presently owned machine for additional years are shown in the table. Note that the values represent the AW amount for each of the n years that the asset is kept, i.e., if it is kept 5 more years, the annual worth is $−95,000 for each of the 5 years. Assume that future costs remain as estimated for the replacement study and that used machines like the one presently owned will always be available. (a) What is the ESL and associated AW of the defender at a MARR of 12% per year? (b) A challenger with an ESL of 7 years and an AWC = $-83,000 per year has been identified. Which AW will be less for the respective ESL periods? Retention Period, Years AW Value, $ per Year 1 -92,000 2 -94,000 3 -80,000 4 -99,000 5 -95,000 a) The ESL of the defender is year(s) with the lowest AW of $ . b) The (Click to select) challenger defender has the lower AW at $ for n equal to .arrow_forward
- George has just finished the cost analysis of a brass pump with and without an interior coating. The brass pump will last 3 years, but if an interior coating is applied, less energy will be needed for pumping. The interior coating costs $300, and the energy savings is $120 per year. George claims that the coating will save $60. Is George's work correct? If not, what has George done wrong?arrow_forwardState-of-the-art digital imaging equipment purchased 2 years ago for $50,000 had an expected useful life of 5 years and a $5000 salvage value. After its installation the performance was poor, and it was upgraded for $20,000 one year ago. Increased demand now requires another upgrade for an additional $22,000 so that it can be used for 3 more years. Its new annual operating cost will be $27,000 with a $12,000 salvage after the 3 years. Alternatively, it can be replaced with new equipment costing $65,000, an estimated AOC of $14,000, and an expected salvage of $23,000 after 3 years. If replaced now, the existing equipment can be traded for only $7000. Use a MARR of 10% per year. (a) Determine whether the company should retain or replace the defender now. (b) Based on the poor experience with the current equipment, assume the person doing this analysis decides the challenger may be kept for only 2 years, not 3, with the same AOC and salvage estimates for the 2 years. What is the decision?arrow_forwardA large city in mid-west needs to buy a street-cleaning machine. A used vehicle will cost $75000 and has a market value of $20000 after its five-year life. A new system cost $150000 and has a market value of $40000 after five-years. The new system has some features that reduce labor hours compared with used system. the used system requires labor hours of 8 hours per day and 20 days per month. the labor costs are $50 per hour. the MARR is 12%. if the new system is expected to be able to reduce labor hours by 20% compared with the used system, which system should the city purchase? and how many hours must the system be operated at the break even?arrow_forward
- The AW values for retaining a presently owned machine for additional years are shown in the table. Note that the values represent the AW amount for each of the n years that the asset is kept, that is, if it is kept 5 more years, the annual worth is $95,000 for each of the 5 years. Assume that future costs remain as estimated for the replacement study and that used machines like the one presently owned will always be available. (a) What is the ESL and associated AW of the defender at a MARR of 12% per year? (b) A challenger with an ESL of 7 years and an AWC = $ −89,500 per year has been identified. Which AW will be less for the respective ESL periods? Retention Period, Years AW Value, $ per Year 1 −92,000 2 −88,000 3 −85,000 4 −89,000 5 −95,000arrow_forwardAnswer in step by step with explanation. Don't use Ai and chatgpt.arrow_forwardDon't use Ai. Answer in step by step with explanation.arrow_forward
- A contractor has a 4-year concrete mixer whose first cost was $6,000, having 3 more years to live before being scrapped and sold at $801. Itcould now be sold for $11,922. It has an annual cost for operation and maintenance of $9,352. Its replacement is being proposed with a newmachine whose first cost will be $8,000 having a life of 9 years and salvage value $1,600. It has an operating cost of $800 per year andmaintenance cost of $320 per year. Ifthe interest is 20% cpd-a, what is the Annual Equivalent Cost of the Old Machine? 14,792arrow_forwardA machine that cost $120,000 3 years ago can be sold now for $52,750. Its market value is expected to be $40,000 and $20,000 1 year and 2 years from now, respectively. Its operating cost was $18,000 for the first 3 years of its life, but the M&O cost is expected to be $23,000 for the next 2 years. A new improved machine that can be purchased for $136,750 will have an economic life of 5 years, and an operating cost of $9,000 per year, and a salvage value of $32,000 whenever it is replaced. At an interest rate of 10% per year, determine if the presently owned machine should be replaced now, 1 year from now, or 2 years from now. The annual worth of the existing machine one year from now is $- now is $- ], and the annual worth of the new machine is $- The presently owned machine should be replaced (Click to select) the annual worth of the existing machine two years fromarrow_forwardAn independent contractor for a transportation company needs to determine whether she should upgrade the vehicle she currently owns or trade her vehicle in to lease a new vehicle. If she keeps her vehicle, she will need to invest in immediate upgrades that cost $5,000 and it will cost $1,500 per year to operate at the end of year that follows. She will keep the vehicle for 4 years; at the end of this period, the upgraded vehicle will have a salvage value of $4,000. Alternatively, she could trade in her vehicle to lease a new vehicle. She estimates that her current vehicle has a trade-in value of $10,000 and that there will be $4,500 due at lease signing. She further estimates that it will cost $3,000 per year to lease and operate the vehicle. The independent contractor's MARR is 12%. Compute the EUAC of both the upgrade and lease alternatives using the insider perspective. EUAC(keep)$ _____ EUAC(lease)$ _____ What alternative should the independent contractor choose: a. either…arrow_forward
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