Can someone please show me how to figure this problem out?P Co. purchased 80% of the outstanding common stk of S Co. on May 1, 2011 for a cash payment of $318,000. S Co's 12/31/10 balance sheet reported common stock of $200,000 and retained earnings of $180,000. During the calendar year 2011 S Co earned $210,000 evenly throughout the year and declared a dividend of $75,000 on Nov 1. What is the amount needed to establish reciprocity under the cost method in the preparation of a consolidated work paper on Dec 31, 2011?