Engineering Economy, Student Value Edition (17th Edition)
Engineering Economy, Student Value Edition (17th Edition)
17th Edition
ISBN: 9780134838137
Author: William G. Sullivan, Elin M. Wicks, C. Patrick Koelling
Publisher: PEARSON
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Chapter 8, Problem 51SE
To determine

Calculate the present worth

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You bought a car 5 years ago for $30,000. This type of car is known to depreciate at a compounded annual rate of 8% per year (given normal mileage and wear-and-tear). If your car depreciated at this rate, how much is it worth today? (Hint: let r=-0.08 and solve for FV).
solve it using manual computation; do not use Microsoft Excel   The Ajax Corporation has an overhead crane that has an estimated remaining life of 10  years. The crane can be sold now for $8,000. If the crane is kept in service, it must be overhauled immediately at a cost of $5,000. Operating and maintenance costs will be $3,000 per year after the crane is overhauled. The overhauled crane will have zero MV at the end of the 8-year study period. A new crane will cost $20,000, will last for 8 years, and will have a $4,000 MV at that time. Operating and maintenance costs are $1,000 per year for the new crane. The company uses a before-tax interest rate of 10% per year in evaluating investment alternatives. Should the company replace the old crane?
Determine the IRR for an equipment that costs $250,000 and would provide positive cash flows of $100,000, $90,000, $80,000, and $20,000 at the end of each year for the next four years. (Try i = 7% &i=8%) 9.75% 7.53% 10.90% 9.38%
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