Answer:
7%
Step-by-step explanation:
The Present value of this single annuity= $109295.
$amount of each annuity= 12000.
By estimation, if we take interest rate(r) =0.07 or 7% in annuity factor formula it will be ((1-(1/(1+0.07)^15))/0.07)=9.1079.
Now, 109295/12000 =9.1079. So, here answer will be 7%