Answer:
Accounts Receivables Turnover Ratio =

Step-by-step explanation:
Accounts Receivables Turnover Ratio =

Here we are provided,
Net Credit sales for the year = $312,000
Accounts Receivables opening balance = $39,000
Accounts Receivables Closing Balance = $49,000
Average balance of Accounts Receivables =

Accounts Receivables Turnover Ratio =

This ratio is used to assess the effectiveness of a company in collecting it's debts, and how much credit shall be given.