Answer: 6.5%
Step-by-step explanation:
Formula for simple interest : I = Prt , where P= principal , r= rate of interest  t= time
As per given , P = $2000 , I=$ 650, t= 5 years
Substitute all theses values in the formula , we get
[tex]650=2000\times r\times5\\\\\Rightarrow\ r=\dfrac{650}{2000\times5}\\\\\Rightarrow\ \dfrac{65}{1000}\\\\\Rightarrow\ r=0.065 =0.065\times100\%=6.5\%[/tex]
Hence, the required annual interest = 6.5%
