Problems 6-5 Interpreting accounts receivable turnover (L06-7) Packaging Corporation of America produces containerboard and white papers. WestRock Co. manufactures paper products and corrugated products. Financial statement data for these two companies follow: Packaging Corporation of America ($ in millions of dollars) 2015 2016 Sales $5,779.0 $6,444.9 $7,814.6 Accounts receivable at December 31 $636.5 689.2 901.9 2017 2018 830.7 2015 2016 2017 2018 West Rock Co. ($ in millions of dollars) Sales Accounts receivable at December 31 $14, 171.8 1,592.2 $14,859.7 1,886.8 $1,575.4 $16,285.1 2,810.7 Source: Computed from amounts in the Packaging Corporation of America and WestRock Co. Form 10-Ks for 2014-2018. In 2015 and 2016, WestRock was known as WRKCo., Inc. Required: 1. Determine the receivables tumover ratios for both companies for 2016, 2017 and 2018. (Use 365 days in a year. Do not round intermediate calculations. Round your answers to 1 decimal place.) 2. Which company collected its accounts receivable more quickly in 2018? Turnover 1. Packaging Corporation of America 2016 2017 2018 WestRock Co. 2016 2017 2018 2. Accounts collected more quickly from