Answer:
Step-by-step explanation:
Alright, let get started.
Suppose the initial deposit in account = x
After five years, this accounts get doubled means  = 2x 
Means in 5 years , the growth = 
So, in 1 year, the growth will be = 
So, in 3 years, the growth will be = 
So percent grwoth will be = 
Hence percentage growth is 60 %.    :  Answer
Hope it will help :)