A | B | |
Initial Cost | 225000000 | 350000000 |
PV of Annual Operation Cost Annual Cost/ MARR |
428571429 | 85714286 |
PV of Maintenance cost per year for 20 Years Maintenance cost * PVAF(7%, for 20 Years) |
529700000 | 317820000 |
Total Cost | 1183271429 | 753534286 |
Option B is better as cost of option B is less than Option A at present
Working Notes
A | B | |
Annual Operation Cost (a) | 30000000 | 6000000 |
MRR (b) | 7% | 7% |
PV of Annual Operation cost (a/b) | 428571429 | 85714286 |
Maintenance Cost per every 20 years (a) | 50000000 | 30000000 |
PVAF (7%,20 years) (b) | 10.594 | 10.594 |
PV of Maintenance cost per year for 20 Years (a*b) | 529700000 | 317820000 |
1. When the life of project is infinite, Present value (PV) of annual cost is calculated by dividing Annual cost by MRR
2. In case of maintenance cost, it is incurred annually for 20 years and to calculate present value of the same, Annual Maintenance cost is multiplied by Present value of annuity factor (PVAF) i.e. 10.594 in the given case
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