A process consists of 3 resources. Resource 1 has processing time of 6 minutes per unit. Resource 2 has processing time of 4 minutes per unit. Resource 3 has processing time of 3 minutes per unit. All resources are staffed by 1 worker and each worker is paid $ 12 per hour. What is the cost of direct labor ? How much idle time does worker at resource 3 have per unit ? What is the average labor utilization ? Assume demand rate is 20 units per hour, what is the Takt time ? What is the target manpower ?