Williamson Distributors separates its accounts receivable into three age groups for purposes of estimating the percentage of uncollectible accounts. 1. Accounts not yet due =$35,000; estimated uncollectible =5%. 2. Accounts 1 to 30 days past due =$10,500; estimated uncollectible =15%. 3. Accounts more than 30 days past due =$4,500; estimated uncollectible =25%. Compute the total estimated uncollectible accounts