SO-NM Cash Flow -$7,400 4,700 3,500 3,400 a. What is the profitability index for the cash flows if the rele percent? 1.423 b. What is the profitability index for the cash flows if the relevan a. What is the profitability index for the cash flows if the relevant discount rate is 7 percent? 1.423 b. What is the profitability index for the cash flows if the relevant discount rate is 16 percent? 1.193