Answer:
Bad debts expense and estimates 800 Â
Allowance for Doubtful Accts         800
 Â
Allowance for Doubtful Accts     650 Â
Accounts receivable account         650
Explanation:
A=Credit sales 40000
B=Percent-of-sales method to account for bad debts expense and estimates 2%
Â
Bad debts expense and estimates = AxB
                             =40000x2%
                              =800
You must remember to register the writte off. $650.