(a company has 55,000 common shares outstanding from January 1 to April 1 and 61,000 common shares outstanding from April 1 to December 31.

(a company has 55,000 common shares outstanding from January 1 to April 1 and 61,000 common shares outstanding from April 1 to December 31. What is the weighted-average number of shares of common stock used in earning per share calculations?)