Respuesta :

A = P*r*t
A = overall value
P = principal (initial value)
r = annual interest
t = time (in years)

Plug in what we have:
4000 = 2000*r*8
Simplify:
0.25 = r
The annual interest is 25%

Answer:

the correct answer is 12.5 percent

Step-by-step explanation: