a) Based on PBP, alt F is a better option
Year |
E |
Cumulative Cash flow |
F |
Cumulative Cash flow |
G |
Cumulative Cash flow |
H |
Cumulative Cash flow |
0 |
-90 |
-90 |
-110 |
-110 |
-100 |
-100 |
-120 |
-120 |
1 |
20 |
-70 |
35 |
-75 |
0 |
-100 |
0 |
-120 |
2 |
20 |
-50 |
35 |
-40 |
10 |
-90 |
0 |
-120 |
3 |
20 |
-30 |
35 |
-5 |
20 |
-70 |
0 |
-120 |
4 |
20 |
-10 |
35 |
30 |
30 |
-40 |
0 |
-120 |
5 |
20 |
10 |
0 |
30 |
40 |
0 |
0 |
-120 |
6 |
20 |
30 |
0 |
30 |
50 |
50 |
180 |
60 |
PBP |
4.50 |
3.14 |
5.00 |
6.00 |
The formula = negative last cumulative cash flow period+(abs(negative last cumulative cash flow/positive cash flow of next period)
So, here for alt F, PBP = 3+(5/35) = 3.14
b. Based on FW, alt H is a better option
FW- Compounded cash flow at 5% |
||||
Year |
E |
F |
G |
H |
0 |
-90.00 |
-110.00 |
-100.00 |
-120.00 |
1 |
21.00 |
36.75 |
0.00 |
0.00 |
2 |
22.05 |
38.59 |
11.03 |
0.00 |
3 |
23.15 |
40.52 |
23.15 |
0.00 |
4 |
24.31 |
42.54 |
36.47 |
0.00 |
5 |
25.53 |
0.00 |
51.05 |
0.00 |
6 |
26.80 |
0.00 |
67.00 |
241.22 |
FW |
52.84 |
48.40 |
88.70 |
121.22 |
The formula is cashflow*(1+0.05)^n, n is number of years
c Here too, alt H is a better option
FW- Compounded cash flow at 20% |
||||
Year |
E |
F |
G |
H |
0 |
-90.00 |
-110.00 |
-100.00 |
-120.00 |
1 |
24.00 |
42.00 |
0.00 |
0.00 |
2 |
28.80 |
50.40 |
14.40 |
0.00 |
3 |
34.56 |
60.48 |
34.56 |
0.00 |
4 |
41.47 |
72.58 |
62.21 |
0.00 |
5 |
49.77 |
0.00 |
99.53 |
0.00 |
6 |
59.72 |
0.00 |
149.30 |
537.48 |
FW |
148.32 |
115.46 |
260.00 |
417.48 |
The formula is cashflow*(1+0.2)^n, n is number of years
d. Alt G B:C ratio is 0.97
Year |
G |
Discounted Benefit |
Discounted Cost |
0 |
-100 |
100 |
|
1 |
0 |
0.00 |
|
2 |
10 |
8.26 |
|
3 |
20 |
15.03 |
|
4 |
30 |
20.49 |
|
5 |
40 |
24.84 |
|
6 |
50 |
28.22 |
|
96.84 |
100 |
B:C = Sum of discounted Benefit/ Sum of discounted Cost = 96.84/100 = 0.9684
Discounting formula = Cashflow/(1+0.1)^n , n is number of years
9-55 Year E Sens 0 $90 -$110-$100 $120 35 35 35 35 9-60 20 2 20 20 4 20 5 20 6 20 10 20 30 40 50 ...
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