The following information (in millions) was taken from the December 31 financial statements of Canadian National Railway Company (CN):

(a) For 2015 and 2014, calculate CNs current ratio, receivables turnover, and average collection period. (Round answers to 1 decimal place, e.g. 5.2.)

2015 2014 2013 Accounts receivable, gross Allowance for doubtful accounts Accounts receivable, net Revenues Total current assets Total current liabilities 5885 $937822 878 928 815 12,611 12,134 10,575 2,153 1,9931,977 2,998 2,20 2,498