Alpha |
Gamma |
Beta |
|
Capital Investment |
8,500,000 |
10,000,000 |
12,000,000 |
Annual O $ M Cost |
750,000 |
725,000 |
700,000 |
Annual Benefits |
2,150,000 |
2,265,000 |
2,500,000 |
Net Annual Benefits(Benefits – O&M Cost) |
1,400,000 |
1,540,000 |
1,800,000 |
Market Value |
1,250,000 |
1,750,000 |
2,000,000 |
MARR = 10% per year
Life all the alternatives = 50 years
For calculating incremental Benefit cost ratio, first we have to calculate the Incremental Cash flows.
First
Calculating the Incremental cash flow between Gamma and Alpha
(Cash Flows of Gamma – Cash Flows of Alpha)
Alpha |
Gamma |
ICF of Gamma and Alpha |
|
Capital Investment |
8,500,000 |
10,000,000 |
1,500,000 |
Net Annual Benefits(Benefits – O&M Cost) |
1,400,000 |
1,540,000 |
140,000 |
Market Value |
1,250,000 |
1,750,000 |
500,000 |
Present Worth of the Benefits = 140,000 (P/A, 10%, 50)
Present Worth of the Benefits = 140,000 (9.9148) = 1,388,072
Present Worth of the Cost = 1,500,000 – 500,000 (P/F, 10%, 50)
Present Worth of the Cost = 1,500,000 – 500,000 (0.0085) = 1,495,750
Incremental B-C Ratio = PW of incremental Benefits / PW of Incremental Costs
Incremental B-C Ratio = 1,388,072 / 1,495,750 = 0.928
Incremental B-C Ratio of Gamma and Alpha is less than one, SELECT the lowest cost alternative, ALPHA.
Second
Now calculate the incremental Cash flow between BETA and ALPHA
(Cash Flows of Beta – Cash Flows of Alpha)
Alpha |
Beta |
ICF of Beta and Alpha |
|
Capital Investment |
8,500,000 |
12,000,000 |
3,500,000 |
Net Annual Benefits(Benefits – O&M Cost) |
1,400,000 |
1,800,000 |
400,000 |
Market Value |
1,250,000 |
2,000,000 |
750,000 |
Present Worth of the Benefits = 400,000 (P/A, 10%, 50)
Present Worth of the Benefits = 400,000 (9.9148) = 3,965,920
Present Worth of the Cost = 3,500,000 – 750,000 (P/F, 10%, 50)
Present Worth of the Cost = 3,500,000 – 750,000 (P/F, 10%, 50)
Present Worth of the Cost = 3,500,000 – 750,000 (0.0085) = 3,493,625
Incremental B-C Ratio = PW of incremental Benefits / PW of Incremental Costs
Incremental B-C Ratio = 3,965,920 / 3,493,625 = 1.135
Incremental B-C Ratio of Beta and Alpha is MORE than one, SELECT the HIGHEST cost alternative, BETA.
Finally Select the alternative BETA.
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