Required information [The following information applies to the questions displayed below.) Pearl E. White Orthodontist specializes in correcting misaligned teeth. During 2021, Pearl provides services on account of $570,000. Of this amount, $60,000 remains receivable at the end of the year. An aging schedule as of December 31, 2021, is provided below. Estimated Percent Uncollectible Age Group Not yet due 0-90 days past due 91-180 days past due More than 180 days past due Total Amount Receivable $20,000 14,000 9,000 17,000 $60,000 156 200 858 Required: 1. Calculate the allowance for uncollectible accounts. Age Group Estimated Amount Uncollectible Not yet due 0-90 days past due 91-180 days past due More than 180 days past due Total