An environmental engineer wants to evaluate three different methods for disposing of nonhazardous chemical waste: land application, fluidized-bed incineration, and private disposal contract. Use the estimates below to help her determine which has the least cost at i= 15.00% per year on the basis of an annual worth evaluation. First Cost AOC per Year Salvage Value Life Land $-145000 $-86000 $23000 4 years Incineration $-760000 $-70000 $260000 6 years Contract O $-132000 O 2 years

Advanced Engineering Mathematics
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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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An environmental engineer wants to evaluate three different methods for disposing of nonhazardous chemical waste: land application,
fluidized-bed incineration, and private disposal contract. Use the estimates below to help her determine which has the least cost at /=
15.00% per year on the basis of an annual worth evaluation.
First Cost
AOC per Year
Salvage Value
Life
Land
$-145000
$-86000
$23000
4 years
Incineration
$-760000
$-70000
$260000
6 years
Contract
O
$-132000
O
2 years
Transcribed Image Text:An environmental engineer wants to evaluate three different methods for disposing of nonhazardous chemical waste: land application, fluidized-bed incineration, and private disposal contract. Use the estimates below to help her determine which has the least cost at /= 15.00% per year on the basis of an annual worth evaluation. First Cost AOC per Year Salvage Value Life Land $-145000 $-86000 $23000 4 years Incineration $-760000 $-70000 $260000 6 years Contract O $-132000 O 2 years
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