Engineering Economic Analysis - Ninth Edition Newnan/Eschenbach/Lavelle Copyright 2004 by Oxford University Press, Inc.2 If PW = A(P/A,i,n) Then (P/A,i,n) = PW/A Solve for (P/A,i,n) and look up interest in Compound Interest Tables Three Major Methods of Economic Analysis PW - Present Worth AW - Annual Worth IRR - Internal Rate of Return
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