Estimating Allowance for Doubtful Accounts Kirchhoff Industries has a past history of uncollectible accounts, as shown below. Percent Age Class Uncollectible Not past due 2% 1-30 days past due 5 31-60 days past due 25 61-90 days past due 35 Over 90 days past due 50 Estimate the allowance for doubtful accounts, based on the aging of receivables schedule below. Kirchhoff Industries Aging of Receivables Schedule Customer Subtotals Conover Industries Not Past 1-30 Days 31-60 Days 61-90 Days Over 90 Days Balance Due Past Due Past Due Past Due Past Due 590,300 348,300 129,900 53,100 29,500 29,500 15,800 15,800 20,900 20,900 10,100 10,100 8,400 8,400 28,600 28,600 Keystone Company Moxie Creek Inc. Rainbow Company Swanson Company 674,100 45,300 Total receivables Percentage uncollectible 376,900 2% 138,300 5% 63,200 25% 50,400 35% 50% Allowance for Doubtful Accounts O D. o