Each project has different service life, in such extend the project life to the maximum project life by adding or repeating the same cycle until 3 projects will have same service life. In case of project A, its service life is 10 years, repeat it for another three times to reach the 40 years of project life, similarly for the project B, repeat it for two times in order to extend its service life to 40 years. Calculate the Net present value for project A using the following equation