3. Two alternatives are in consideration. Each choice has a 7-year life. B Alternative First cost $235,000 $180,000 Salvage value 44,000 14,400 Annual benefit 89,000 68,000 56,000 Yearly O&M 21,000 12,000 cost 68,000 (a) [30 points] Construct a choice table for interest rates from 0% to 100%. DO NOT USE EXCEL. Use numerical approach. Interpolation (Hint: Find YRRA, which is the decision change-over point between do nothing and Alt. A; Find IRRB, which is the decision change-over point between do nothing and Alt. B; Find AIRR = IRRA-B, which is the decision change-over point between Alt. A and Alt. B; Calculate the NPW or EUAW at i = 0% for both Alt. A and B; Then you can draw a rough chart based on these computed data to help build the choice table.) 3. Two alternatives are in consideration. Each choice has a 7-year life. B Alternative First cost $235,000 $180,000 Salvage value 44,000 14,400 Annual benefit 89,000 68,000 56,000 Yearly O&M 21,000 12,000 cost 68,000 (a) [30 points] Construct a choice table for interest rates from 0% to 100%. DO NOT USE EXCEL. Use numerical approach. Interpolation (Hint: Find YRRA, which is the decision change-over point between do nothing and Alt. A; Find IRRB, which is the decision change-over point between do nothing and Alt. B; Find AIRR = IRRA-B, which is the decision change-over point between Alt. A and Alt. B; Calculate the NPW or EUAW at i = 0% for both Alt. A and B; Then you can draw a rough chart based on these computed data to help build the choice table.)