Answer:
a. To record sales
Date Account Title Debit Credit
Feb 23 Accounts Receivable - Mr. X Br. 4,000
Sales Revenue Br. 4,000
b. To record account written off:
Date Account Title Debit Credit
June 24 Allowance for doubtful accounts Br. 4,000
Accounts Receivable - Mr. X Br. 4,000
c. To reverse original written of Mr. X’s account
Date Account Title Debit Credit
Nov 28 Accounts Receivable - Mr. X Br. 4,000
Allowance for doubtful accounts Br. 4,000
d. To record collection of the account
Date Account Title Debit Credit
June 24 Cash Br. 4,000
Accounts Receivable - Mr. X Br. 4,000