Long-term investment decision, IRR method Kelvin and Vivian Wong have exist 33,000 to invest. On average, they do not make any investment that will not return at least 7% per year. They have been approached with a "profitable" investment opportunity that requires exist 33,000 up front and has a payout of exist 8, 300 at the end of each of the next 5 years. Using the internal rate of return (IRR) method and their requirements, determine whether Kelvin and Vivian should undertake the investment.