Illustration 3: Calculate 'Cash from Operating activities' from the following balances: December 31 2014 Current Assets and Current Liabilities: Debtors. Bills Receivable Creditors Bills Payable Outstanding Expenses Prepaid Expenses Accrued Income Income received in advance Operating profit before working capital changes was 80,000 90,000 7,000 50,000 8,000 1,000 1,800 800 700 2015 70,000 12,000 55,000 6,000 1,500 1,600 900