a What is the value today of a stream of cash flows paying $500 at the end of each of the next 8 years? Assume an interest rate of 10%. b What is the value today of a stream of annual cash flows paying $500 at the beginning of each of the next 8 years (i.e., the first cash flow will occur today)? Assume an interest rate of 10%. (Helpful hint: remember that the PVA table is compiled on the basis that the first cash flow occurs in 1 years time.)