Water purification facilities are in the planning stage, with expected lives of 10 years. Two final plans are being compared using a MARR of 15%. Which alternative is preferred using incremental IRR? First Cost O&M Cost Alt. A $1,200,000 30,000 Alt. B $800,000 20,000

ENGR.ECONOMIC ANALYSIS
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Chapter1: Making Economics Decisions
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Water purification facilities are in the planning stage, with expected lives of 10 years. Two
final plans are being compared using a MARR of 15%. Which alternative is preferred using incremental
IRR?
First Cost
O&M Cost
Annual Benefits
Salvage Value
Alt. A
Alt. B
$1,200,000 $800,000
20,000
250,000
-20,000
30,000
350,000
50,000
Transcribed Image Text:Water purification facilities are in the planning stage, with expected lives of 10 years. Two final plans are being compared using a MARR of 15%. Which alternative is preferred using incremental IRR? First Cost O&M Cost Annual Benefits Salvage Value Alt. A Alt. B $1,200,000 $800,000 20,000 250,000 -20,000 30,000 350,000 50,000
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