Answer and Explanation:
The preparation of the stockholder equity section of the balance sheet is shown below:
Common stock ($1 × 1,200,000 shares)      $1,200,000
Add: Additional paid in capital              $20,000,000
Add: Retained earnings                    $15,000,000
Less: Treasury stock                      $1,600,000
Stockholder equity                      $34,600,000
We simply added the all items except the treasury stock as it should be deducted