Lucas Company had net income for the year ended December 31, 2010, of $30,000. On January 1, 2010, the number of shares of common stock outstanding was 6,000. There were no common stock transactions (sales or repurchases) during the year. In April 2010, the company declared and paid a $3,000 cash dividend on its preferred stock. Lucas Company's computed basic earnings per share for 2010 is...?