Basics Of Engineering Economy
2nd Edition
ISBN: 9780073376356
Author: Leland Blank, Anthony Tarquin
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Calculate the B/C ratio for the following cash flow estimates, using a discount rate of 6% per year. Is the project justified?
The cash flows associated with a public works project in Buffalo, NY, are shown. Calculate the modified B/C ratio at a discount rate of 5% per year.
The benefits associated with a nuclear power plant cooling water filtration project located on the Ohio River are $15,000 per year
forever, starting in year 1. The costs are $75,000 in year 0 and $75,000 at the end of year 2. At i= 10% per year, calculate the B/C ratio
to determine if the project is justified economically.
The B/C ratio will be
The project is economically justified
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Basics Of Engineering Economy
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- The estimated annual cash flows for a proposed municipal government project are costs of $750,000 per year, benefits of $900,000 per year, and disbenefits of $225,000 per year. Calculate the conventional B/C ratio at an interest rate of 6% per year and determine if it is economically justifiedarrow_forwardA rural, agriculture-based city that has 17,000 households is required to install treatment systems for the removal of arsenic and other harmful chemicals from its drinking water. The annual cost is projected to be $150 per household per year. Assume that one life will be saved every 3 years as a result of the removal systems. (a) What is the B/C ratio, if a human life is valued at $4.8 million? Use an interest rate of 8% per year and assume the life is saved at the end of each 3-year period. (b) What justifies the project?arrow_forwardA consultant, after 3 months of work, reported that the modified B/C ratio for a city-owned hospital heliport project is 1.6. If the initial cost is $1.8 million and the annual benefits are $125,000, what is the amount of the annual M&O costs used in the calculation? The report stated that a discount rate of 7% per year and an estimated life of 35 years were used. The M&O cost is $ .arrow_forward
- The estimated annual cash flows for a proposed municipal government project are costs of $710,000 per year, benefits of $890,000 per year, and disbenefits of $210,000 per year. Calculate the conventional B/C ratio at an interest rate of 9% per year, and determine if it is economically justified. 1.39 The project is economically not justified The B/C ratio isarrow_forwardThe B/C ratio for a mosquito control program proposed by the Harris County Department of Health is reported to be 2.1. The person who prepared the report stated that the annual health benefits were estimated to be $400,000, and that disbenefits of $25,000 per year were used in the calculation. He also stated that the costs for chemicals, machinery, maintenance, and labor were estimated at $150,000 per year, but he forgot to list the cost for initiating the program (trucks, pumps, tanks, etc.). If the initial cost was amortized over a 10-year period at 8% per year, what is the estimated initial cost?arrow_forwardA consultant, after 3 months of work, reported that the modified B/C ratio for a city-owned hospital heliport project is 1.7. If the initial cost is $1 million and the annual benefits are $150,000, what is the amount of the annual M&O costs used in the calculation? The report stated that a discount rate of 6% per year and an estimated life of 30 years were used.arrow_forward
- The following estimates (in $1000 units) have been developed for a security system upgrade at Chicago’s O’Hare Airport. (a) Calculate the conventional B/C ratio at a discount rate of 10% per year. Is the project justified? (b) Determine the minimum first cost that is possible to render the project just economically unjustified. Item Cash Flow First cost, $ 13,000 AW of benefits, $ per year 3,800 FW of disbenefits, year 20, $ 6,750 M&O costs, $ per year 400 Life, years 20arrow_forwardAn alternative has the following cash flows: benefits = $50,000 per year; disbenefits $27,000 per year; costs $25,000 per year. The B/C ratio is closest to: 1.04 L 0.92 2.00 0.96arrow_forwardThe conventional B/C ratio estimate of 2.1 was reported to the County Commissioners for a proposed mosquito control program.The person who prepared the report stated that the health benefits were estimated to be $400,000 per year, and that disbenefits of $25,000 per year were used in the calculation. She also stated that the costs for chemicals, machinery, maintenance, and labor were estimated at $150,000 per year. However, sheforgot to list the cost for initiating the program (trucks, pumps, tanks, etc.). If the project has a 10-year study period and an 8%-per-year discount rate, determine the estimated initial cost.arrow_forward
- An Army Corps of Engineers project for improving navigation on the Ohio River will have an initial cost of $6,500,000 and annual maintenance of $130,000. Benefits for barges and paddle wheel touring boats are estimated at $820,000 per year. If the project is assumed to be permanent, use theconventional B/C ratio to determine if it is economically justified at 8% per year.arrow_forwardTwo alternatives, identified as X and Y, are evaluated using the B/C method. Alternative Y has a higher total cost than X. If the B/C ratios are 1.2 and 1.0 for alternatives X and Y, respectively, which alternative should be selected? Whyarrow_forwardThe modified B/C ratio for a city-owned hospital heliport project is 1.7. The initial cost is $0.975 million, annual benefits are $150,000, and the estimated life is 29 years. What is the amount of the annual M&O costs used in the calculation at a discount rate of 6% per year? The annual M&O costs is $arrow_forward
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