Accounts receivable management This table, shows that Blair Supply had an end-of-year " accounts receivable balance of $299,905. The table also shows how much of the receivables balance originated in each of the previous six months. The company had annual sales of $2.40 million and it normally extends 30-day credit terms to its customers. a. Use the year-end total to evaluate the firm's collection system. b. If 70% of the firm's sales occur between July and December, would this affect the validity of your conclusion in part a? Explain. a. The average collection period is days. (Round to two decimal places.) Data table (Click the icon here in order to copy the contents of the data table below into a spreadsheet.) Month of Amounts receivable origin July $3,850 August 1,975 September 33,980 October 15,060 November 52,040 December 193,000 Year-end accounts receivable $299,905