The following projects are available, but only one can be chosen. The cost of capital in all cases is 16%.

Project A: An initial investment of $180,000 followed by profits of $30,000 in years one to four, $40,000 in years five to seven, and $50,000 in years eight to ten and a residual value of $100,000 in year 10..

Please show steps / formulas / calculations