a. At the beginning of the year, Addison Company's assets are $173,000 and its equity is $129,750. During the year, assets increase $80,000 and liabilities increase $48,000. What is the equity at year-end? b. Office Store Company has assets equal to $230,000 and liabilities equal to $196,000 at year-end. What is the equity for Office Store Company at year-end? c. At the beginning of the year, Quaker Company's liabilities equal $52,000. During the year, assets increase by $60,000, and at