Answer:
Journal Entries that are required are given below
Explanation:
On February 1(Write off) Debit Credit
Allowance for doubtful debt $6800
Account receivable (Oakley Co.) $900
Account receivable (Brookes Co.) $5900
On June 5 (Reinstating the account) Debit Credit
Account receivable (Oakley Co.) $900
Allowance for doubtful debt $900
On June 5 (Recording the cash received) Debit Credit
Cash $900
Account Receivable(Oakley Co.) $900