years 18. An investor invests $64,000 and receives an annuity of $8,000 at the end of each year for 12 and an additional payment of $18,000 at the end of the 13th year. Each time he gets an $8,000 payment, he immediately deposits $3,000 in a savings account that earns 8%. Find the annual yield received by the investor over the 13 years.