a) NPVa=−79,000+(30,000−7,000)∗1.081−1(1.081)7−1=50,326.23
NPVb=−110,000+(60,000−35,000)∗1.081−1(1.081)8−1=45,159.25
NPVc=−244,000+(58,500−18,500)∗1.081−1(1.081)10−1−1.081030,000=31,979.72
ABC Ltd should choose project A
b) For the comparable assessment, the same amount of time is needed. It is 14 years
A project will repeate 2 times; B project will repeate 1.75 times; C project will repeate 1.4 times
NPVa=−79,000−1.08779,000+(30,000−7,000)∗1.081−1(1.081)14−1=79,691.11
NPVb=−110,000−1.088110,000∗0.75+(60,000−35,000)∗1.081−1(1.081)14−1=68,022.22
NPVc=−244,000−1.0810244,000∗0.4(58,500−18,500)∗1.081−1(1.081)14−1−1.081430,000=56,738.48
The project A still the most effective
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