Providing for Doubtful Accounts At the end of the current year, the accounts receivable account has a balance of $644,000 and sales for the year total $7,300,000 Determine the amount of the adjusting entry to provide for doubtful accounts under each of the following independent assumptions: a. The allowance account before adjustment has a negative balance of $(8,700). Bad debt expense is estimated at 1/4 of 1% of sales. b. The allowance account before adjustment has a negative balance of $(8,700). An aging of the accounts in the customer ledger indicates estimated doubtful accounts of $27,800 $ c. The allowance account before adjustment has a positive balance of $7,700. Bad debt expense is estimated at 3/4 of 1% of sales. d. The allowance account before adjustment has a positive balance of $7,700. An aging of the accounts in the customer ledger indicates estimated doubtful accounts of $63,900