The estimated capital investment and the annual expenses) for four alternative designs of a diesel-powered air compressor are shown below, as well as the estimated market value for each design at the end of the common five-year useful life. The study period is five years, and the MARR is 10% per year. One of the designs must be selected for the compressor, and each design provides the same level of service. On the basis of this information, (a) Determine the preferred design alternative, using the IRR method (b) Show that the FW method (i = MARR), using the incremental analysis. procedure, results in the same decision.

The estimated capital investment and the annual expenses) for four alternative designs of a diesel-powered air compressor are shown below, as well as the estimated market value for each design at the end of the common five-year useful life. The study period is five years, and the MARR is 10% per year. One of the designs must be selected for the compressor, and each design provides the same level of service. On the basis of this information, (a) Determine the preferred design alternative, using the IRR method (b) Show that the FW method (i = MARR), using the incremental analysis. procedure, results in the same decision.

ENGR.ECONOMIC ANALYSIS

14th Edition

ISBN:9780190931919

Author:NEWNAN

Publisher:NEWNAN

Chapter1: Making Economics Decisions

Section: Chapter Questions

Problem 1QTC

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The International Parcel Service has installed a new radio frequency identification system to help reduce the number of packages that are incorrectly delivered. The capital investment in the system is $65,000, and the projected annual savings are tabled below. The system’s market value at the EOY five is negligible, and the MARR is 18% per year. Calculate the payback period of the project.
A piece of new equipment has been proposed by engineers to increase the productivity of a certain manual welding operation. The investment cost is $25,000, and the equipment will have a market value of $5,000 at the end of a study period of five years. Increased productivity attributable to the equipment will amount to $8,000 per year after extra operating costs have been subtracted from the revenue generated by the additional production. If the firm’s MARR is 20% per year, is this proposal a sound one? Use the PW method.
The ford motor company is considering three mutually exclusive electronic stability control systems for protection against rollover of its automobiles. The investment (study) period is four years, and MARR is 12% per year. Data for the fixture costs of the systems are as follows: plot the AW of each alternative against MARR as the MARR varies across this range:4%, 8%, 12%, 16%, and 20%. What can you generalize about the range of the MARR for which each alternative is preferred?
Two designs are suitable for housing track and field events. Design N costs $800,000 with annual upkeep costs including maintenance, repair, heat, and janitor service, of $25,000 a year. Its life is expected to be permanent. Design T costs $450,000 with annual upkeep costs for the previous items of $35,000 a year. However, with this design, repairs costing $15,000 will be required every 5 years, and the life will be 25 years with a probable salvage at that date of $50,000. The minimum required rate of return is 10%. Use present worth analysis to compare these two alternatives.
Three mutually exclusive alternatives are being considered for the production equipment at a tissue paper factory. The estimated cash flows for each alternative are given here. (All cash flows are in thousands.)Which equipment alternative, if any, should be selected? The firm’s MARR is 20% per year. Please state your assumptions.
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A bridge design firm is performing an economic analysis of two mutually exclusive designs for a highway overpass. The steel girder option has an initial cost of $2.26 million, and the concrete option has an initial cost of $2.33 million. Every 25 years, the steel bridge must be painted at a cost of $560,000, and all other maintenance costs are the same for both options. The steel bridge is expected to last 50 years, and concrete bridge is expected to last 75 years. Based on the shortest acceptable analysis period, determine the present worth of costs for the best option using an interest rate of 7%. Express your answer in $ to the nearest $10,000.
A potential project is currently under review. An initial investment of $87,000 would be necessary for equipment. The annual revenues and expenses are expected to be $40,000 and $19,000 each year, respectively, over the 6-year project period. The salvage value of the equipment at the end of the project period is projected to be $17,000. Assume a MARR of 9%. Find the AW (directly - do not convert from either FW or PW - to the nearest cent).
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