(7) Tom invests $80,000 and earns $12,000 on the first five anniversaries of his investment. Upon receipt of each $12,000 payment, he immediately deposits $5,000 into a savings account earning 5% payable annually. If Tom withdraws the accumulated money in the savings account a year after the last payment, find the yearly yield rate earned by Tom during the six-year period. Note that this investment includes two parts, the investment of the original $80,000 and the reinvestment at 5%. Check that your yield rate is between the rates for these two parts