Superior Investment: Common Life Approach

Intelligent Semiconductor Projects: Project A vs Project B

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Question

The management of Intelligent Semiconductor is considering two mutually exclusive projects, which are detailed below:

Project A -

Electron looping apparatus -

Initial investment outlay ($6,000,000)

t1: $2,750,000

t2: $1,250,000

t3: $1,250,000

t4: $2,750,000

Cost of capital of 10.55%

Project B -

Optical switching apparatus -

Initial investment outlay ($5,040,000)

t1: $1,000,000

t2: $1,000,000

t3: $1,500,000

t4: $1,500,000

t5: $1,500,000

t6: $750,000

t7: $300,000

t8: $50,000

Cost of capital of 10.55%

Assuming no taxes, a $0.00 salvage value at the end of the each project's life, as well as the ability to replicate each project identically at the end of its lifespan, which is the superior investment according to the Common Life approach? Additionally, what are the NPV and IRR of the superior project over the common life?

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Explanations

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A. B. C. D. E.

E

The Replacement Chain, or "Common Life" approach, is a useful method which allows two or more projects with unequal lives to be examined. In the

Replacement Chain approach, the lifespans of each project being examined are multiplied in such a way that the resulting projects share a "common life." In this example, the Optical Switching apparatus has a lifespan of eight periods, while the electron looping apparatus has a four-period lifespan. The common multiple of both projects is 8, and by replicating the cash flows of the electron looping project through period 4, i.e. by carrying out the project for an additional cycle, we can arrive at a "common life" for both projects. Carrying out the electron-looping project through eight periods will yield the following series of cash flows:

Electron looping apparatus -

t0: ($6,000,000)

t1: $2,750,000

t2: $1,250,000

t3: $1,250,000

t4: [$2,750,000 + ($6,000,000)]=($3,250,000)

t5: $2,750,000

t6: $1,250,000

t7: $1,250,000

t8: $2,750,000

By incorporating these cash flows into your calculator, you will find a NPV of $462,038 for this project, as well as an IRR of 12.72%. The Optical Switching apparatus has a NPV of $287,725 and an IRR of 12.38%.