Engineering Economy (17th Edition)
Engineering Economy (17th Edition)
17th Edition
ISBN: 9780134870069
Author: William G. Sullivan, Elin M. Wicks, C. Patrick Koelling
Publisher: PEARSON
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Chapter 9, Problem 1P
To determine

Calculate the Annual worth.

Expert Solution & Answer
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Explanation of Solution

Time period is denoted by n and the interest is denoted by i. The annual worth (AW) of defender can be calculated as follows.

AWDefender=Investment(i(1+i)n(1+i)n1)Costmaiintenance(Total miles×Cost per galonMileage)=400(0.15(1+0.15)2(1+0.15)21)8000(15,000×3.510)=6,296   

Annual worth of defender is -$6,296.

The annual worth (AW) of challenger can be calculated as follows.

AWChallenger=Investment(i(1+i)n(1+i)n1)Costmaiintenance(Total miles×Cost per galonMileage)=8,000(0.15(1+0.15)2(1+0.15)21)8000(15,000×3.530)=4,345   

Annual worth of challenger is -$4,345. Since the annual worth of the challenger is greater, replace immediately.

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Andrew’s utility depends on consuming L, hours of leisure and Y a composite good. Andrew can work as many hours as he wants to at the wage rate of w, and the price of Y is $1. Andrew’s indifference curves exhibit diminishing MRS. When Andrew’s wage rate decreases, he spends less time working. Answer the following questions using a indifference curve-budget line diagram. Explain your answers carefully. a. Does the substitution effect cause him to work less hours? (If the direction of the effect is ambiguous, say so, and show why on your diagram) b. Does the income effect cause him to work less hours? (If the direction of the effect is ambiguous, say so, and show why on your diagram)
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