Answer:
$ 13.000
Step-by-step explanation:
The accounting equation states that :
Total Assets = Total Liabilities + Equity
To accomplish this equation is needed a total value of retained earnings of $13.000 , in this manner you have the equation complete:
$50.000 = Liab. ($22.000) + Equity ($15.000 +$13.000)
Retained earnings is a component of the Equity next to common stock.