Engineering Economy, Student Value Edition (17th Edition)
Engineering Economy, Student Value Edition (17th Edition)
17th Edition
ISBN: 9780134838137
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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Problema 4 (20 puntos): Supongamos que tenemos un ingreso de $120 y enfrentamos los precios P₁ =6 y P₂ =4. Nuestra función de utilidad es: U(x1, x2) = x0.4x0.6 a) Planteen el problema de optimización y obtengan las condiciones de primer orden. b) Encuentren el consumo óptimo de x1 y x2. c) ¿Cómo cambiará nuestra elección óptima si el ingreso aumenta a $180?
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