A company has the following information about its accounts receivable for the year 2022:

Beginning balance of accounts receivable: $20,000
Sales on credit during the year: $100,000
Collections from customers during the year: $80,000
Write-offs during the year: $5,000
a) Calculate the ending balance of accounts receivable for the year 2022.

b) Calculate the company's accounts receivable turnover ratio for the year 2022.

c) Calculate the average collection period for the year 2022.