The balances below are shown in alphabetical order in a professional service firm's ledger at the end of a financial year. Required: Calculate a. The profit for the year b. The shareholders' equity at the end of the year Advertising expense $15,000 Bank 5,000 Shareholder's equity at the beginning of the year 71,000 Accounts payable 11,000 Accounts receivable 12,000 Fixed assets 100,000 Income 135,000 Rent expense 10,000 Salary expense 75,000