Answer:
14.44%
Step-by-step explanation:
Given:
Dividend payout ratio = 40%
Current net income = $ 5,200
Total equity = $ 21,600
thus, 
value of the company = total equity = $ 21,600
Now,
The return on equity = ( Net income of the company) / (value of company ) 
on substituting the respective values, we get
The return on equity = $ 5,200 / $ 21,600 
 or
The return on equity = 0.2407 
also, 
The growth rate = return on equity × (1 - payout ratio ) 
 on substituting the respective values, we get
The growth rate = 0.2407 × (100% - 0.4%) 
 or
The growth rate = 0.2407 × 60% = 14.44%