Answer:
Missing word "is estimated as $8,820. Amount added Ending balance b. Credit balance of $450 in Allowance for Doubtful Accounts just prior to adjustment. Bad debt expense is estimated at 2% of credit sales, which totaled $1,111,000 for the year. Amount added Ending balance"
a. Amount added = Balance as per aging method - Credit balance
Amount added = $8,820 - $370
Amount added = $8,450
So, Amount added = $8,450, Ending balance = $8,820
b. Amount added = 2% * Credit sale
Amount added = 2% * $1,111,000
Amount added = $22,220
Ending balance = $22,220 + $370
Ending balance = $21,850