Assume that 10 years ago you purchased a $1,000 bond for $870. The bond pays 13.75 percent interest and will mature this year. (a) Calculate the current yield on your bond investment at the time of the purchase. (Enter your answer as a percent rounded to 2 decimal places.) Current yield 15.80 % (b) Determine the yield to maturity on your bond investment at the time of purchase. (Enter your answer as a percent rounded to 2 decimal places.) Yield to maturity 7.14 %