Two possible routes for a power line are under study. Data on the routes are as shown in the following table:
Option
Information
Around the Lake
Under the Lake
Length
15 km
5 km
First Cost
$5000 / km
$25,000 /km
Maintenance cost
$200/km/yr
$400/km/yr
Useful Life (years)
15
20
Salvage Value
$3000/km
$5000/km
Yearly power loss
$500/km
Annual Taxes
2% of the first cost
If MARR = 10%, which alternative should you select? Justify your answer.
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