a-1
Computation of IRR using trial and error method:
IRR for Project A:
Let’s compute NPV at discount rate of 17 %
Year |
Cash Flow (CA) |
PV Factor Computation |
PV Factor @ 17 % (F) |
PV (CA x F) |
0 |
($28,700) |
1/ (1+0.17)0 |
1 |
($28,700.00) |
1 |
$14,100 |
1/ (1+0.17)1 |
0.8547008547009 |
$12,051.28 |
2 |
$12,000 |
1/ (1+0.17)2 |
0.7305135510264 |
$8,766.16 |
3 |
$9,050 |
1/ (1+0.17)3 |
0.6243705564328 |
$5,650.55 |
4 |
$4,950 |
1/ (1+0.17)4 |
0.5336500482332 |
$2,641.57 |
NPV1 |
$409.57 |
As NPV is positive, let’s compute NPV at discount rate of 18 %.
Year |
Cash Flow (CA) |
PV Factor Computation |
PV Factor @ 18 % (F) |
PV (CA x F) |
0 |
($28,700) |
1/ (1+0.18)0 |
1 |
($28,700.00) |
1 |
$14,100 |
1/ (1+0.18)1 |
0.8474576271186 |
$11,949.15 |
2 |
$12,000 |
1/ (1+0.18)2 |
0.7181844297616 |
$8,618.21 |
3 |
$9,050 |
1/ (1+0.18)3 |
0.6086308726793 |
$5,508.11 |
4 |
$4,950 |
1/ (1+0.18)4 |
0.5157888751519 |
$2,553.15 |
NPV2 |
($71.37) |
IRR = R1 + [NPV1 x (R2 -R1) %/ (NPV1 – NPV2)
= 17 % + [$ 409.57 x (18 % - 17 %)/ [$ 409.57 – (-$ 71.37)]
= 17 % + ($ 409.57 x 0.01)/ ($ 409.57 + $ 71.37)
= 17 % + ($ 4.0957 / $ 480.94)
= 17 % + 0.008516103549
= 17 % + 0.8516103549 %
= 17.85 %
IRR for Project B:
Let’s compute NPV at discount rate of 17 %
Year |
Cash Flow (CB) |
PV Factor Computation |
PV Factor @ 17 % (F) |
PV (CB x F) |
0 |
($28,700) |
1/ (1+0.17)0 |
1 |
($28,700.00) |
1 |
$4,150 |
1/ (1+0.17)1 |
0.8547008547009 |
$3,547.01 |
2 |
$9,650 |
1/ (1+0.17)2 |
0.7305135510264 |
$7,049.46 |
3 |
$14,900 |
1/ (1+0.17)3 |
0.6243705564328 |
$9,303.12 |
4 |
$16,500 |
1/ (1+0.17)4 |
0.5336500482332 |
$8,805.23 |
NPV1 |
$4.81 |
As NPV is positive, let’s compute NPV at discount rate of 18 %.
Year |
Cash Flow (CB) |
PV Factor Computation |
PV Factor @ 18 % (F) |
PV (CB x F) |
0 |
($28,700) |
1/ (1+0.18)0 |
1 |
($28,700.00) |
1 |
$4,150 |
1/ (1+0.18)1 |
0.8474576271186 |
$3,516.95 |
2 |
$9,650 |
1/ (1+0.18)2 |
0.7181844297616 |
$6,930.48 |
3 |
$14,900 |
1/ (1+0.18)3 |
0.6086308726793 |
$9,068.60 |
4 |
$16,500 |
1/ (1+0.18)4 |
0.5157888751519 |
$8,510.52 |
NPV2 |
($673.45) |
IRR = R1 + [NPV1 x (R2 -R1) %/ (NPV1 – NPV2)
= 17 % + [$ 4.81 x (18 % - 17 %)/ [$ 4.81 – (-$ 673.45)]
= 17 % + ($ 4.81 x 0.01)/ ($ 4.81 + $ 673.45)
= 17 % + ($ 0.0481 / $ 678.26)
= 17 % + 0.00007091676
= 17 % + 0.007091676 %
= 17.01 %
a-2.
Using the IRR decision rule, Project A should be selected.
a-3.
No, the decision is not necessarily correct.
b-1.
NPV = PV of future cash flow – Initial investment
Computation of NPV for Project A:
Year |
Cash Flow (CA) |
PV Factor Computation |
PV Factor @ 12 % (F) |
PV (CA x F) |
0 |
($28,700) |
1/ (1+0.12)0 |
1 |
($28,700.00) |
1 |
$14,100 |
1/ (1+0.12)1 |
0.8928571428571 |
$12,589.29 |
2 |
$12,000 |
1/ (1+0.12)2 |
0.7971938775510 |
$9,566.33 |
3 |
$9,050 |
1/ (1+0.12)3 |
0.7117802478134 |
$6,441.61 |
4 |
$4,950 |
1/ (1+0.12)4 |
0.6355180784048 |
$3,145.81 |
NPV |
$3,043.04 |
Computation of NPV for Project B:
Year |
Cash Flow (CB) |
PV Factor Computation |
PV Factor @ 12 % (F) |
PV (CBx F) |
0 |
($28,700) |
1/ (1+0.12)0 |
1 |
($28,700.00) |
1 |
$4,150 |
1/ (1+0.12)1 |
0.8928571428571 |
$3,705.36 |
2 |
$9,650 |
1/ (1+0.12)2 |
0.7971938775510 |
$7,692.92 |
3 |
$14,900 |
1/ (1+0.12)3 |
0.7117802478134 |
$10,605.53 |
4 |
$16,500 |
1/ (1+0.12)4 |
0.6355180784048 |
$10,486.05 |
NPV |
$3,789.85 |
b-2.
Project B should be chosen, if applied NPV decision rule.
c.
Computation of incremental Cash Flow:
Year |
Cash Flow (CA) |
Cash Flow (CB) |
Incremental cash Flow (CA – CB) |
0 |
($28,700) |
($28,700) |
$0 |
1 |
$14,100 |
$4,150 |
$9,950 |
2 |
$12,000 |
$9,650 |
$2,350 |
3 |
$9,050 |
$14,900 |
($5,850) |
4 |
$4,950 |
$16,500 |
($11,550) |
Computation of incremental IRR:
Let’s compute NPV at discount rate of 15 %
Year |
Cash Flow (CA - CB) |
PV Factor Computation |
PV Factor @ 15 % (F) |
PV (CA -CB) x F |
0 |
$0 |
1/ (1+0.15)0 |
1 |
$0.00 |
1 |
$9,950 |
1/ (1+0.15)1 |
0.869565217391304 |
$8,652.17 |
2 |
$2,350 |
1/ (1+0.15)2 |
0.756143667296787 |
$1,776.94 |
3 |
($5,850) |
1/ (1+0.15)3 |
0.657516232431988 |
($3,846.47) |
4 |
($11,550) |
1/ (1+0.15)4 |
0.571753245593033 |
($6,603.75) |
NPV1 |
($21.11) |
As NPV is negative, let’s compute NPV at discount rate of 16 %.
Year |
Cash Flow (CA - CB) |
PV Factor Computation |
PV Factor @ 16 % (F) |
PV (CA -CB) x F |
0 |
$0 |
1/ (1+0.16)0 |
1 |
$0.00 |
1 |
$9,950 |
1/ (1+0.16)1 |
0.862068965517241 |
$8,577.59 |
2 |
$2,350 |
1/ (1+0.16)2 |
0.743162901307967 |
$1,746.43 |
3 |
($5,850) |
1/ (1+0.16)3 |
0.640657673541351 |
($3,747.85) |
4 |
($11,550) |
1/ (1+0.16)4 |
0.552291097880475 |
($6,378.96) |
NPV2 |
$197.21 |
Incremental IRR = R1 + [NPV1 x (R2 -R1) %/ (NPV1 – NPV2)
= 15 % + [ - $ 21.11 x (16 % - 15 %)/ (- $ 21.11 – $ 197.21)
= 15 % + (- $ 21.11 x 0.01)/ - $ 218.32
= 15 % + (- $ 0.2111 / - $ 218.32)
= 15 % + 0.0009669292781
= 15 % + 0.09669292781 %
= 15.09669292781 or 15.10 %
At discount rate of 15.10 %, the company will be indifferent between these projects.
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