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 briggs equipment 1 $320,000 $120,000 2 280,000 120,000 3 240,000 320,000 4 160,000 400,000 5 120,000 440,000 both projects require an initial investment of $560,000. in both cases, assume that the equipment has a life of 5 years with no salvage value.