Prepare the required journal entries. 214) The following summarizes the aging of accounts receivable for Johnston Supplies, Inc. as of July 31, 2019: Historical Uncollectible Number of Days Unpaid Not yet due 1-30 days past due 31-60 days past due Over 60 days past due Total Accounts Receivable $ 126,500 89.200 53,600 31.800 Required: Part a. The unadjusted balance of the Allowance for Doubtful Accounts of Johnston Supplies, Inc. is a credit balance in the amount of $28,947 on July 31, 2019 Prepare the required adjusting entry to record Bad Debt Expense for the year. Part B. Johnston Supplies, Inc, writes off $3,081 of uncollectible accounts on August 15, 2019 Prepare the required adjusting entry to record the write-off Partc. Use a T-account to determine the account balance in the Allowance for Doubtful Accounts on August 15, 2019