Calculation of the amount of stockholders' equity at the end of March 2014:
The amount of stockholders' equity at the end of the period can be calculated using the following formula:
Stockholders' equity at the end of the period = Stockholders’ equity at the beginning of the period + Net Income earned during the period –Dividend declared and paid during the period
= 200,000+50,000-10,000
= 240,000
Hence, the amount of stockholders' equity at the end of March 2014 is $240,000.