Problem 8-13 Calculating Profitability Index [LO 6] Consider the following cash flows: a. What is the profitability index for the above set of cash flows if the relevant discount rate is 10 percent? Note: Do not round intermediate calculations and round your answer to 3 decimal places, e.g., 32.161. b. What is the profitability index if the discount rate is 15 percent? Note: Do not round intermediate calculations and round your answer to 3 decimal places, e.g., 32.161. c. What is the profitability index if the discount rate is 22 percent? Note: Do not round intermediate calculations and round your answer to 3 decimal places, e.g., 32.161