Please answer these two questions, so that I can obtain a better understanding of why the question being asked. Please answer both questions as clearly as possible. I would really appreciate you answer both excercise.

Practice Exercise 8-4 (page 389) (Adapted) At the end of the current year, Accounts Receivable has a balance of $1,672,000; Allowance for Doubtful Accounts has a credit balance of $22,748; and sales for the year total $26,560,000. Using the aging method, the balance of Allowance for Doubtful Accounts is estimated as $227,600. Determine (a) the amount of the adjusting entry for uncollectible accounts; (b) the adjusted balances of Accounts Receivable, Allowance for Doubtful Accounts, and Bad Debt Expense; and (c) the net realizable value of accounts receivable. Exercise 8-4 (p. 391) (Adapted) Journalize the following transactions in the accounts of Dining Interiors Company, a restaurant supply company that uses the allowance method of accounting for uncollectible receivables: Apr.2 Sold merchandise on account to Peking Palace Co., $55,600. The cost of the merchandise sold was $27,400. June 9 Received $15,000 from Peking Palace Co. and wrote off the remainder owed on the sale of April 2 as uncollectible. Oct. 31 Reinstated the account of Peking Palace Co. that had been written off on June 9 and received $40,600 in full payment