please help me on this one im stuck

Reproduced below from Farthington Supply's accounting records is the accounts receivable subledger along with selected general ledger accounts Dec. 31/19 Balance Credit sales in 2020 General Ledger Accounts Receivable 160,500 7,840 ???? ???? 14,400 22721 Jan. 4/20 Collections in 2020 July 15/20 Dec. 31/20 Balance July 15/20 Allowance for Doubtful Accounts 14,200 240 Dec. 31/19 Balance ???? Dec. 31/20 ???? Dec. 31/20 Balance Accounts Receivable Subledger DenStar Company Dec. 31/19 Balance 40,300 Nov. 15/20 ??? 48,300 Dec. 31/20 Balance 106,000 Jan. 20/20 India Developments 17,400 Har: 20/20 Dec. 31/19 Balance Mar. 1/20 Nov. 28/20 Dec. 2/20 Dec. 31/20 Balance 17,400 40,200 44,400 Dec. 31/19 Balance Lomas Industries ???? 7,040 >>> 53,200 53,200 Jan. 4/20 Tain. 7/20 Hay 5/20 Apr. 21/20 Dec. 7/20 Dec. 31/20 Balance 23,00 Dec. 31/19 Balance PDQ Servicing 14,400 14.400 July 15/20 Dec. 31/20 Balance During the year 2020, there were no recoveries of accounts previously written off. Only one account, that of PDQ Servicing was identified as being uncollectible on July 15, 2020. On January 4, 2020, Farthington issued a $7,040 credit memo to Lomas Industries regarding damaged goods returned. Required Analyzing the accounts, determine the following amounts: a. The December 31, 2019, balance in Lomas Industries' account Amount b. The January 7 2020, collection from Lomas Industries Amount c. The December 31, 2020, balance in the Accounts Receivable controlling account Amount d. The November 15.2020. transaction in JenStar Company's account Amount e. Collections during 2020 Amount 1. Credit sales during 2020. Amount g. Adjusting entry on December 31, 2020, to estimate uncollectible accounts based on a rate of 2.5% of outstanding receivables. (Round your final answers to nearest whole dollar) View transaction list Journal entry worksheet Record the adjusting entry to estimate uncollectible accounts based on a rate of 2.5% of outstanding receivables. Note Enter debits before credits Date General Journal Debit Credit Dec 31 h. The December 31, 2020, balance in the Allowance for Doubtful Accounts. (Round your final answer to nearest whole dollar) Amount 1. Show how accounts receivable should appear on the balance sheet on December 31, 2020. (Round your final answers to nearest whole dollar) Partint Balance Sheet Current assets