3. On January 1, 2011, Pat Corporation paid $400,000 for purchase of Sad Corporation, when Sad's stockholders' equity consisted of $300,000 capital stock and $200,000 retained earnings. Book values were equal to fair values of Sad's assets and liabilities, except for a building and land. The building had a book value of $80,000, a fair value of $120,000, and a remaining useful life of eight years. The land had a book value of $50,000 and a fair value of $150,000. Required: Calculate goodwill at the date of purchase of Sad Corporation (15p)