For discount factors use Exhibit 128.1 and Exhibit 120.2. Spiro Hospital is investigating the possibility of investing in new dialysis equipment. Two local manufacturers of this equipment are being considered as sources of the equipment. After-tax cash inflows for the two competing projects are as follows: Year Puro Equipment 1 $320,000 Briggs Equipment $120,000 120,000 2 280,000 240,000 1 4 160,000 120,000 320,000 400,000 440,000 5