Question

A tunnel to transport water through a mountain range has an expected maintenance cost of $32,000...

A tunnel to transport water through a mountain range has an expected maintenance cost of $32,000 from year 1 to year 8. Determine the approximate:

a) Present worth at year 0

b) Future worth at year 8.

Use an interest rate of 6% per year.

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Answer #1

A.

R = 6%

n = 8 years

Present worth at Year 0 = 32000*(1-1/1.06^8)/.06

Present worth at Year 0 = $198713.40

=======

B.

Future worth at the end of year 8 = 198713.40*1.06^8

Future worth at the end of year 8 = $316718.97 or $316719

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