Answer:
Record the cash collection on September 9
Bank $6,100 (debit)
Bad Debt $6,100 (credit)
Explanation:
When Barnes writes off a customer account on May 7
Bad Debts $6,100 (debit)
Account Receivable $6,100 (credit)
When the customer unexpectedly pays the $6,100 balance on September 9
Bank $6,100 (debit)
Bad Debt $6,100 (credit)
Recognise the Assets of Cash Flowing in the entity and De-recognise the Bad Debts expense account.