1. The problem statement, all variables and given/known data Three different alternatives shown below are being considered. Assume that alternatives X and Z are replaced at the end of their lives Alt. X Alt. Y Alt. Z Initial Cost - 6000 1000 1500 Annual Benefits - 810 125 230 Useful Life - 20 infinite 10 MARR = 12% for all Find the Net Present Worth for Alt. X, Alt. Y, and Alt. Z. 2. Relevant equations capitalized cost A = iP F = A [((1 + i)n - 1))/i] P = A [((1 + i)n - 1))/i(1 + i)n] 3. The attempt at a solution I found the NPW for Alt. Y P = (125/.12) - 1000 = 41.67 I'm still stuck on X and Z.