Answer: Please see answer in explanation column
Step-by-step explanation:
a) Journal entry to write off an uncollectible amount.
Date Account Debit Credit
Jan 31st Allowance for doubtful accounts $2,100
Accounts receivable—C. Green $2,100
b) Journal to record recovery of the bad debt.
Date Account Debit Credit
Mar 9 Accounts receivable—C. Green $1,600
Allowance for doubtful accounts $1,600
c) Journal to record payment on account.
Date Account Debit Credit
Mar 9 Cash $1,600
Accounts receivable—C. Green $1,600