Compute the traditional payback period (PB) for a project that costs $72,000 if it is expected to generate $18,000 per year for six years? Round your answer to the nearest whole number. years If the firm's required rate of return is 10 percent, what is the project's discounted payback period (DPB)? Do not round intermediate calculations. Round your answer to two decimal places. years Should the project be purchased? The project be purchased