1. Playworld, Inc. sells playground equipment to schools and municipalities. Invoices are mailed at the end of each month for all goods shipped during that month; credit terms are net 30 days. Sales and accounts receivable data for 2008, 2009, and 2010 were as follows: 2008 2009 2010 Sales $2,560,975 $2,663,414 $2,903,121 Year-end receivables $328,330 $342,120 $396,859 A. Calculate the growth rates in sales and receivables during 2009 and 2010. B. Do your calculations indicate any potential problems with Playworlds receivables? If so, suggest a possible explanation for your findings