The following summarizes the aging of accounts receivable for Johnston Supplies, Inc. as of July 31, 2016: Number of Days Unpaid Not yet due 1-30 days past due 31-60 days past due Over 60 days past due Total Accounts Receivable $128,400 $91,100 $55,500 $33,700 Historical % Uncollectible 5% 10% 16% 29%