Answer:
$420,000
Explanation:
According to the question for computation of total stockholders' equity first we need to find out the addition to retained earning during 2019 which is shown below:-
Addition to retained earnings during 2019 = Net income - Cash dividend - Stock dividend
= $40,000 - $8,000 - $10,000
= $22,000
Total stockholders equity at December 31, 2019 = Stockholders equity, December 31, 2018 + Addition to retained earnings during 2019 + Stock dividend + Issue of new common stock - Purchase of Treasury stock
= $340,000 + $22,000 + $10,000 + $60,000 - $12,000
= $432,000 - $12,000
= $420,000