Canyon Tours showed the following components of working capital last year: Beginning of Year End of Year Accounts receivable $ 25,400 23,700 Inventory 12,700 13,900 Accounts payable 15,200 17,900 a....

Canyon Tours showed the following components of working capital last year:

a.What was the change in net working capital during the year?(A negative amount should be indicated by a minus sign.)

b.If sales were $36,700 and costs were $24,700, what was cash flow for the year? Ignore taxes.