Exercise 4 A trial balance before adjustment included the following: Debit Credit $80,000 Accounts receivable Allowance for doubtful accounts Sales Sales returns and allowances 730 $340,000 8,000 Give journal entries assuming that the estimate of uncollectibles is determined by taking: (1) 5% of gross accounts receivable (2) 1% of net sales (3) An aging analysis shows $4,100 of the accounts are uncollectible (4) What is the net realizable value of each after the entries just calculated