On Dec. 31, 2011, Paff Company (see question 8) had accounts receivable of $290,000 and inventories of $530,000. During 2011 , net sales amounted to $2,500,000 and cost of goods sold was $750,000. Compute (a) accounts receivable turnover, (b) days' sales uncollected, (c) inventory turnover, and (d) days' sales in inventory