Answer:
a. Accounts receivable turnover = Net sales on account/Average accounts receivable
2017
Accounts receivable turnover = $5,800,000/$530,000
Accounts receivable turnover = 10.94
2016
Accounts receivable turnover = $5,200,000 / $550,000
Accounts receivable turnover = 9.45
b. Average collection period = 365 days/Accounts receivable turnover
2017
Average collection period = 365/10.94
Average collection period = 33 days
2016
Average collection period = 365/9.45
Average collection period = 39 days