If McCumbers Inc. earned net income of $595,000 for the current year (2012) and preferred dividends of $66,000 during that period. At December 13, 2012 a 2 for 1 common stock split had been executed and that 20,000 new common stock shares had been issued on May 1, 2012 and 5,000 shares of treasury stock had been acquired on November 1st.
Determine the following: a. The 2012 net income available to common Shareholders; b. The weighted average common shares outstanding; c. The basic earnings per share (EPS).

I got Part A done, I'm just having difficulty with B and C.