PROBLEM NO. 6In connection with your examination of the financialstatementsofRingo,Inc.fortheyearendedDecember 31, 2010, you were able to obtain certaininformationduringyourauditoftheaccountsreceivable and related accounts.The December 31, 2010 balance in the AccountsReceivable control accounts is P837,900.An aging schedule of the accounts receivable as ofDecember 31, 2010 is presented below:AgeNet debitbalancePercentage to beapplied aftercorrections have beenmade60 days &underP387,8001 percent61 to 90days307,1002 percent91 to 120days89,8005 percentOver 120days53,200P837,900Definitely uncollectible,P9,000; the remainderis estimated to be 25%uncollectible.TwoentriesmadeintheDoubtfulAccountsExpense account were:1.A debit on December 31 for the amount of thecredit to the Allowance for Doubtful Accounts.2.A credit for P6,100 on November 30, 2010,and a debit to Allowance for Doubtful Accountsbecause of a bankruptcy.The related salestook place on October 1, 2010.The Allowance for Doubtful Accounts schedule ispresented below:DebitCreditBalanceJanuary 1, 2010P19,700November 30,2010P6,10013,600December 31,2010(P837,900 x5%)P41,895P55,495There is a credit balance in one account receivable(61 to 90 days) of P11,000; it represents anadvance on a sales contract

how did we get the Doubtful Expense P20,875?