Engineering Economy
16th Edition
ISBN: 9780133582819
Author: Sullivan
Publisher: DGTL BNCOM
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Chapter 6, Problem 49P
(a):
To determine
Calculate the present worth.
(b:
To determine
Calculate the
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Three mutually exclusive electric-vehicle battery systems are being investigated by a large automobile manufacturer. Pertinent data are given below: Solve, a. Use the PW method to select the best battery system. The MARR is 15% per year, and the system chosen must provide service for 10 years. Assume repeatability. b. Confirm your recommendation in Part (a) using the IRR method.
THK Industry has $10,000 to spend on as many as 3 products to enhance her
business. Use the PW method to determine which of these independent investments are
financially acceptable at 9% per year compounded monthly. All are expected to last 5 years.
Feature Initial Investment | Revenue ($/per month)
Product-1
-3,000
150
Product-2
-6,500
180
Product-3
-3,100
200
The most possible values of an investment project are as follows:
First cost, $
300,000
Annual operating cost, $
10,000
Annual benefit, $
120,000
Salvage value, $
80,000
Life, year
30
MARR per year
15%
The most uncertain parameters are annual operating cost and annual benefit. Perform a multiparameter sensitivity analysis and write your conclusions
Chapter 6 Solutions
Engineering Economy
Ch. 6 - Prob. 1PCh. 6 - The Consolidated Oil Company must install...Ch. 6 - Prob. 3PCh. 6 - Three mutually exclusive design alternatives are...Ch. 6 - Prob. 5PCh. 6 - Prob. 6PCh. 6 - Fiesta Foundry is considering a new furnace that...Ch. 6 - Prob. 8PCh. 6 - Prob. 9PCh. 6 - Consider the following cash flows for two mutually...
Ch. 6 - Prob. 11PCh. 6 - Prob. 12PCh. 6 - The alternatives for an engineering project to...Ch. 6 - Prob. 14PCh. 6 - Prob. 15PCh. 6 - Prob. 16PCh. 6 - Refer to the situation in Problem 6-16. Most...Ch. 6 - Prob. 18PCh. 6 - Prob. 19PCh. 6 - Prob. 20PCh. 6 - Prob. 21PCh. 6 - Prob. 22PCh. 6 - Prob. 23PCh. 6 - Prob. 24PCh. 6 - Prob. 25PCh. 6 - In the Rawhide Company (a leather products...Ch. 6 - Refer to Problem 6-2. Solve this problem using the...Ch. 6 - Prob. 28PCh. 6 - Prob. 29PCh. 6 - Prob. 30PCh. 6 - Prob. 31PCh. 6 - Prob. 32PCh. 6 - Prob. 33PCh. 6 - Potable water is in short supply in many...Ch. 6 - Prob. 35PCh. 6 - Prob. 36PCh. 6 - In the design of a special-use structure, two...Ch. 6 - Prob. 38PCh. 6 - a. Compare the probable part cost from Machine A...Ch. 6 - Prob. 40PCh. 6 - Two mutually exclusive alternatives are being...Ch. 6 - Prob. 42PCh. 6 - IBM is considering an environmentally conscious...Ch. 6 - Three mutually exclusive earth-moving pieces of...Ch. 6 - A piece of production equipment is to be replaced...Ch. 6 - Prob. 46PCh. 6 - Prob. 47PCh. 6 - Prob. 48PCh. 6 - Prob. 49PCh. 6 - Prob. 50PCh. 6 - Prob. 51PCh. 6 - Prob. 52PCh. 6 - Prob. 53PCh. 6 - Prob. 54PCh. 6 - Prob. 55PCh. 6 - Prob. 56PCh. 6 - Prob. 57PCh. 6 - Prob. 58PCh. 6 - Prob. 59PCh. 6 - Prob. 60PCh. 6 - Prob. 61PCh. 6 - Prob. 62PCh. 6 - Prob. 63PCh. 6 - Prob. 64PCh. 6 - Prob. 65PCh. 6 - Prob. 66PCh. 6 - Three models of baseball bats will be manufactured...Ch. 6 - Refer to Example 6-3. Re-evaluate the recommended...Ch. 6 - Prob. 69SECh. 6 - Prob. 70SECh. 6 - Prob. 71SECh. 6 - Prob. 72CSCh. 6 - Prob. 73CSCh. 6 - Prob. 74CSCh. 6 - Prob. 75FECh. 6 - Prob. 76FECh. 6 - Prob. 77FECh. 6 - Complete the following analysis of cost...Ch. 6 - Prob. 79FECh. 6 - For the following table, assume a MARR of 10% per...Ch. 6 - Prob. 81FECh. 6 - Problems 6-82 through 6-85. (6.4) Table P6-82 Data...Ch. 6 - Prob. 83FECh. 6 - Problems 6-82 through 6-85. (6.4) Table P6-82 Data...Ch. 6 - Problems 6-82 through 6-85. (6.4) Table P6-82 Data...Ch. 6 - Consider the mutually exclusive alternatives given...Ch. 6 - Prob. 87FE
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- An industrial machine costing $10,000 will produce net cash savings of $4,000 per year. The machine has a five-year useful life but must be returned to the factory for major repairs after three years of operation. These repairs cost $5,000. The company's MARR is 10% per year. What IRR will be earned on the purchase of this machine? Analyze the sensitivity of IRR to $2,000 changes in the repair cost. Perform the sensitivity analysis. Fill-in the table below. (Round to one decimal place.) Change in the repair cost - $2,000 $0 IRR 21.05% % Is the project acceptable? Yesarrow_forwardThe price of a car you want is $42,000 today. Its price is expected to increase by $1000 each year. You now have $25,000 in an investment account, which is earning 10% per year. How many years will it be before you have enough to buy the car without borrowing any money? Solve by (a) trial and error, and (b) by spreadsheet.arrow_forwardindustry has $10,000 to spend on as many as 3 products to enhance her business. Use the PW method to determine which of these independent investments are financially acceptable at 9% per year compounded monthly. All are expected to last 5 years. Initial Investment Revenue ($/per month) -3,000 Feature Product-1 150 Product-2 -6,500 180 Product-3 -3,100 200arrow_forward
- You have been asked to evaluate two alternatives, X and Y, that may increase plant capacity for manufacturing high-pressure hydraulic hoses. The parameters associated with each alternative have been estimated. Which one should be selected on the basis of a present worth comparison at an interest rate of 12% per year? Why is yours the correct choice? Alternative X Y First cost, $ −45,000 −58,000 Maintenance cost, $/year −8,000 −4,000 Salvage value, $ 2,000 12,000 Life, years 5 5arrow_forwardPotable water is in short supply in many countries. To address this need, two mutually exclusive water purification systems are being considered for implementation in China. Doing nothing is not an option. Refer to the data below and state your key assumptions in working this problem. Solve, a. Use thePWmethod to determine which system should be selected when MARR = 8% per year. b. Which system should be selected whenMARR = 15% per year?arrow_forwardTony works for ABC Window Products. While performing an analysis for a new window product, Tony found a report from last year that provided the following information regarding the manufacture of a similar product: annual production rate = 40,000 units; selling price = P70 per unit; fixed production cost = P240,000 per year; variable production cost = P1,700,000 per year; variable selling expenses = P96,000 per year. What is the breakeven production rate per year of the company? Blank 1 unitsarrow_forward
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