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An existing machine can be kept if $1,000 is spent now to update it for future service...

Question:

An existing machine can be kept if $1,000 is spent now to update it for future service requirements. Alternatively, the company can purchase a new machine to replace the old machine. The following estimates have been developed for both the defender and the challenger.

Defender Challenger
Current MV $35,500 Purchase price $51,500
Required upgrade $1,000 Installation cost $5,500
Annual Expense $1,100 Annual expense $500
Remaining useful life 6 years Useful life 10 years
MV at the end of useful life -$500 MV at the end of useful life $6,500

The company's before-tax MARR is 20% per year.

Based on the information, should the existing machine be replaced right now? Assume the machine will be needed for an indefinite period of time.

a) Using AW method, Defender by $927

b) Using AW method, Challenger by $1,718

c) Using AW method, Challenger by $927

d) Using AW method, Defender by $1,718

Present Worth Analysis:

The present worth analysis is the method used to evaluate Assets and projects. In this method, the cash inflow of the project is discounted using the required rate of return. The alternative having the highest present was selected.

Answer and Explanation: 1

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Defender annual worth can be calculated as follows:

Defender Annual Worth = -36,500(A/P, 20%, 6) - 1,100 - 500(A/F, 20%, 6)

Defender Annual Worth =...

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How to Calculate Present Value of an Investment: Formula & Examples

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Chapter 24 / Lesson 15
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Calculating the present value of an investment tells how much money needs to be saved now in order to reach a desired, future amount. Explore the definition of and formula for the present value of an investment, and see examples.


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