Ty received a separation payment of $25 000 from his former employer when he was 35-years old. He invested that sum of money at 5.5% compounded semi-annually. When he was 65, he converted the balance into an ordinary annuity paying $6000 every 3 months with interest at 6% compounded quarterly. For how long will the annuity continue to pay him?

Show answer in quarters rounded to 2 decimal places i.e.33.67