how would i gind the allowance for doughtful accounts balnr at december 31, 2017 using the numbers showed in the above picture?

Use the information that follows taken from the unadjusted trial balance and aging schedule of Behrend Company on December 31, 2017 to answer the questions below. All sales are on account. Accounts and related balances at December 31, 2017 before adjustment: Debit Credit $47,000 Accounts receivable $420 Allowance for doubtful accounts 400,000 Sales (all on account) 2,000 Sales returns Aging Schedule of Accounts Receivable: Amount % Uncollectible Age 0-30 days $15,000 2% 30-60 days 18,000 7% Over 60 days 14,000 13% If Behrend uses the aging schedule of accounts receivable to determine bad debts, determine the following: Allowance for Doubtful Accounts balance at December 31, 2017 Ending allowance for uncollectible accounts $ Show Work is REQUIRED for this question: Open Show Work