Long-term investment decision, payback method Personal Finance Problem Bill Williams has the opportunity to invest in project A that costs $6,300 today and promises to pay $2,300,$2,500,$2,500,$1,900 and $1,900 over the next 5 years. Or, Bill can invest $6,300 in project B that promises to pay $1,500,$1,500,$1,500,$3,700 and $3,900 over the next 5 years. (Hint: For mixed stream cash inflows, calculate cumulative cash inflows on a year-to-year basis until the initial investment is recovered.) a. How long will it take for Bill to recoup his initial investment in project A ? b. How long will it take for Bill to recoup his initial investment in project B ? c. Using the payback period, which project should Bill choose? d. Do you see any problems with his choice