Based on the table below, compute the company's cash balance at the end of the year: Beginning cash balance $50,000 Activities during the year Decrease in Accounts Payable $30,000 Decrease in Accounts Receivables $20,000 Depreciation Expense $10,000 Net Income $80,000 Purchase of fixed assets $55,000 Sale of common stock $35,000 Decrease in Notes Payable $40,000 Dividends Paid $20,000 $50,000 $70,000 $40,000 $60,000