Answer:
(a) On December 10, a customer balance of $1,400 from a prior year was determined to be uncollectible
Dr Sales Returns and Allowances $ 1,400 
Cr Accounts Receivable $ 1,400
(b) On December 31, a decision was made to continue the accounting policy of basing estimated bad debt losses on 2 percent of credit sales for the year.
Dr Bad Debt Expense $ 752 
Cr Allowance for Uncollectible Accounts $ 752
Step-by-step explanation:
Initial Balance 
Dr Accounts Receivable $ 12,000
Cr Allowance for Uncollectible Accounts $ 500
Kelly’s Camera Shop had sales revenue, of which $60,000 was on credit 
Dr Accounts Receivable $ 60,000 
Cr Sales $ 60,000
Collections of accounts receivable during 2018 amounted to $58,000. 
Dr Cash $ 58,000 
Cr Accounts Receivable $ 58,000
(a) On December 10, a customer balance of $1,400 from a prior year was
determined to be uncollectible, so it was written off. 
Dr Allowance for Uncollectible Accounts $ 1,400 
Cr Accounts Receivable $ 1,400
(b) On December 31, a decision was made to continue the accounting policy of basing estimated bad debt losses on 2 percent of credit sales for the year. 
Dr Bad Debt Expense $ 752 
Cr Allowance for Uncollectible Accounts $ 752