At the beginning of the year, Gilles Company had total assets of $800,000 and total liabilities of $300,000. Answer the following questions.

(a) If total assets increased $150,000 during the year and total liabilities decreased $60,000, what is the amount of owner's equity at the end of the year?

(b) During the year, total liabilities increased $100,000 and owner's equity decreased $70,000. What is the amount of total assets at the end of the year?

(c) If total assets decreased $80,000 and owner's equity increased $120,000 during the year, what is the amount of total liabilities at the end of the year?