Cost Accumulation: Service: For the month of March, Conehead Consulting Group (CCG) worked 400 hours for Big Manufacturing, 100 hours for Little Manufacturing, and 200 hours for Retailers, Inc. CCG bills clients at the rate of $100 per hour, while labor cost is $40 per hour. A total of 800 hours were worked in March, with 100 hours not billable to clients. Overhead costs of $12,000 were incurred. Overhead was assigned to jobs (that is, clients) on the basis of direct labor-hours. Since 100 hours were not billable, some overhead was not assigned to jobs. CCG had $6,000 marketing and administrative costs. All transactions are on account.

Required: Prepare T-accounts and journal entries to reflect these events.