ENGR.ECONOMIC ANALYSIS
ENGR.ECONOMIC ANALYSIS
14th Edition
ISBN: 9780190931919
Author: NEWNAN
Publisher: Oxford University Press
Question
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Chapter 5, Problem 34P
To determine

To find:Whether automated system or the existing labor-intensive system should be preferred to line G.

Expert Solution & Answer
Check Mark

Answer to Problem 34P

Present worth for labor intensive is less -$432,912than the present worth of automated system which is $442,464 . Therefore, labor intensive should be preferred.

Explanation of Solution

Given information:

    LaborintensiveSystemAutomatedSystem
    Initial cost$0$110,000
    Installation cost$0$18,500
    Firs year O&M cost$2000$4800
    Annual increase$450$950
    First year labor cost$72,000$47,500
    Annual increase 5%5%
    Salvage value (EOY 15)250020,000

Interest rate is 20%

No. of years are 15

Formula used:

Spreadsheet Function to calculate net present worth

  NPV(rate,CF1:CFn)

  Initial cost+ NPV(rate,CF1:CFn)

NPV − Net present value rate − Interest rate

CF1:CF2 − Cash flow data range without the initial cost

Calculation:

  YearLabor intensiveAutomatedO&M costLabor costCash flowO&M costLabor costCash flow0$0$1285001$2000$7200074000$4800$4750052300224507560078050575049875556253290079380822806700523695906943350833498669976505498762637538008751691316860057737663376425091892961429550606237017374700964871011871050063655741558515010131110646111450668377828795600106377111977124007017982579106050111696117746133507368887038116500117280123780143007737291672126950123144130094152508124196491137400129302136702162008530310150314785013576714361717150895681067181583001425551508551810094047112147

By using the above-mentioned formula, labor intensive system &automated system’spresent Worth is calculated.

Present worth of labor-intensive system

  0432912

Present worth of automated system

  128500313964

Present worth for labor intensive is $432912 & for automated system is $442464 . Labor intensive system cost is less than the automated system, therefore, labor intensive system is more preferred than the automated system.

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Chapter 5 Solutions

ENGR.ECONOMIC ANALYSIS

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