Problem 4 shows the following balances: Instructions The trial balance before adjustment of Santillan Inc. Accounts Receivable Debits $180,000 Credits Allowance for Doubtful Accounts Sales (all on credit) 3,500 $1.000.000 Give the entry for estimated bad debts assuming that the allowance is to provide for doubtful accounts on the basis of (a) 5% of accounts receivable and (b) 5% of accounts receivable but Allowance for Doubtful Accounts had a $2,500 credit balance.