Accounts payable ............................................... $10,000 Non-current portion notes payable .................... $20,000 Accounts receivable ............................................ 15,000 Office supplies ................................................ 3,800 Buildings ........................................................... 42,000 Prepaid insurance ............................................ 2,500 Cash ................................................................. 4,000 Unearned revenue ............................................ 1,000 Current portion of notes payable ......................... 7,000 Wages payable ................................................ 3,000 Using the information above, calculate the: a. Working capital b. Current ratio Round calculations to two decimal places. c. What is the difference between working capital and the current ratio? d. Assuming this companys current ratio was 1.12:1 in the last accounting period, does the result of the calculation in part (b) above represent a favourable or unfavourable change?