Answer:
$25,200
Explanation:
Allowance for doubtful accounts should have a credit balance since it is a contra asset account that reduces the value or accounts receivable. In this case, the account has a debit balance, so the adjusting entry should be:
December 31, adjusting entry allowance for doubtful accounts:
Dr Bad debt expense 31,100
Cr Allowance for doubtful accounts 31,100
that way the final balance of allowance for doubtful accounts = $31,100 - $5,900 = $25,200