Estimating Allowance for Doubtful Accounts Kirchhoff Industries has a past history of uncollectible accounts, as shown below. Age Class Percent Uncollectible Not past due 1% 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 blank Customer Balance Not Past Due 1-30 Days Past Due 31-60 Days Past Due 61-90 Days Past Due Over 90 Days Past Due Subtotals 587,900 346,900 129,300 52,900 29,400 29,400 Conover Industries 12,900 12,900 Keystone Company 17,300 17,300 Moxie Creek Inc. 5,200 5,200 Rainbow Company 9,100 9,100 Swanson Company 29,300 29,300 Total receivables 661,700 376,200 138,400 58,100 46,700 42,300 Percentage uncollectible 1% 5% 25% 35% 50% Allowance for Doubtful Accounts fill in the blank 1 fill in the blank 2 fill in the blank 3 fill in the blank 4 fill in the blank 5 fill in the blank 6