4. At the end of the current year, Accounts Receivable has a balance of $550,000; Allowance for Doubtful Accounts has a credit balance of $5,500; and net sales for the year total $2,500,000. An analysis of receivables estimates uncollectible receivables as $25,000.

Determine (a) the amount of the adjusting entry for bad debt expense; (b) the adjusted balances of Accounts Receivable, Allowance of Doubtful Accounts; and Bad Debt Expense; and (c) the net realizable value of accounts receivable.