Estimating Doubtful Accounts accounts in each age category are folos: Age Claus Balance Uncollectible Not past due 1-30 days past due 31-60 days past due 61-90 days past due 91-180 days past due Over 180 days past due $450,000 49,500 22,500 16,200 11,700 1,600 $558,500 Estimate what the proper balance of the allowance for doubtful accounts should be as of December 31. Estimated Uncollectible Accounts Amount Age Class Uncollectible Not past due 1-30 days past due $450,000 49,500 22.500 31-60 days past due 61-90 days past due 16,200 91-180 days past due 11.700 Over 180 days past due 3.600 $558,500 Total