Determine the after-tax yield (i.e., IRR on the ATCF) obtained by an individual who purchases a $12,000, 10-year, 10% nominal interest rate bond. Given that interest is paid semi-annually, and the bond was bought after the fifth payment had just been received by the previous owner. The purchase price for the bond was $8,000. All revenues (including capital gains) are taxed at an income rate of 28%. The bond is held to maturity (e.g. if your answer is 90.146%, please enter 90.15)