Find the present values of these ordinary annuities. Discounting occurs once a year. Do not round intermediate calculations. Round your answers to the nearest cent. a. $400 per year for 16 years at 10%. $ b. $200 per year for 8 years at 5%. $ c. $300 per year for 8 years at 0%. $ d. Rework previous parts assuming they are annuities due. Present value of $400 per year for 16 years at 10% : $ Present value of $200 per year for 8 years at 5% : $ Present value of $300 per year for 8 years at 0% : $