In: Economics
Compare the alternatives C and D on the basis of a present worth analysis using an interest rate of 8% per year and a study period of 10 years. Which alternative should be selected and what is the PW of the selected alternative?
Show steps for finding both alternatives. No excel.
Alternative |
C |
D |
First cost, $ |
-40,000 |
-32,000 |
Annual operating cost/year |
-7,000 |
-3,000 |
Annual increase in operating cost per year |
-1000 |
0 |
Salvage value |
9000 |
500 |
Life, Years |
10 |
5 |
Alternative-C | ||||||||
Year | Cashflows | PVF @8% | Present value | |||||
0 | 40000 | 1.000 | 40000 | |||||
1 | 7000 | 0.926 | 6481.481 | |||||
2 | 8000 | 0.857 | 6858.711 | |||||
3 | 9000 | 0.794 | 7144.49 | |||||
4 | 10000 | 0.735 | 7350.299 | |||||
5 | 11000 | 0.681 | 7486.415 | |||||
6 | 12000 | 0.630 | 7562.036 | |||||
7 | 13000 | 0.583 | 7585.375 | |||||
8 | 14000 | 0.540 | 7563.764 | |||||
9 | 15000 | 0.500 | 7503.735 | |||||
10 | 7000 | 0.463 | 3242.354 | |||||
Present value of cash outflows | 108,779 | |||||||
Note: In year 10, salvage value is deducted from Annual operating cost | ||||||||
Alternative-D | ||||||||
Year | Cashflows | PVF @8% | Present value | |||||
0 | 32000 | 1.000 | 32000 | |||||
1 | 3000 | 0.926 | 2777.778 | |||||
2 | 3000 | 0.857 | 2572.016 | |||||
3 | 3000 | 0.794 | 2381.497 | |||||
4 | 3000 | 0.735 | 2205.09 | |||||
5 | 34500 | 0.681 | 23480.12 | |||||
6 | 3000 | 0.630 | 1890.509 | |||||
7 | 3000 | 0.583 | 1750.471 | |||||
8 | 3000 | 0.540 | 1620.807 | |||||
9 | 3000 | 0.500 | 1500.747 | |||||
10 | 2500 | 0.463 | 1157.984 | |||||
Present value of cash outflows | 73,337 | |||||||
Note: In year-5, annual operating and investment is cash outlflow as reduced by salvage value | ||||||||
Note: In year-10, salvage value is reduced from annual operating cost | ||||||||
Hence, Alternative D shall be selected as Present value of outflow is $73,337 | ||||||||