P = 10000 S = 1000 Annual Savings = 4000 Annual Maintenance Cost = 3000 i = 5%, n = 7 years Which formula below will correctly calculate NPW? -10000 (P/A, 5%, 7) + 1000 (P/F, 5%, 7) + 4000 (P/A, 5%, 7) - 3000 (P/A, 5%, 7)    -10000 (A/P, 5%, 7) + 1000 (A/F, 5%, 7) + 4000 - 3000     None of the above   -10000 + 1000 + 4000 - 3000   -10000 (A/P, 5%, 7) + 1000 (A/F, 5%, 7) + 4000 + 3000

ENGR.ECONOMIC ANALYSIS
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Chapter1: Making Economics Decisions
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P = 10000
S = 1000
Annual Savings = 4000
Annual Maintenance Cost = 3000
i = 5%,
n = 7 years

Which formula below will correctly calculate NPW?

-10000 (P/A, 5%, 7) + 1000 (P/F, 5%, 7) + 4000 (P/A, 5%, 7) - 3000 (P/A, 5%, 7)
  
-10000 (A/P, 5%, 7) + 1000 (A/F, 5%, 7) + 4000 - 3000
 
  None of the above
 
-10000 + 1000 + 4000 - 3000
 
-10000 (A/P, 5%, 7) + 1000 (A/F, 5%, 7) + 4000 + 3000
 
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