Providence City acquired its power plant from a private company on June 1. No receivables were acquired with the purchase. Therefore, total accounts receivable on June 1 had a zero balance. Providence plans to bill customers in the month following the month of sale, and 80% of the resulting billings will be collected during the billing month. 90% of the remaining balance should be collectable in the next following month. The remaining uncollectible amounts will relate to citizens who have moved away. Such amounts are never expected to be collected and will be written off