5. (4 points) Mr. K's is a very popular hair salon. It offers high-quality hairstyling and physical relaxation services at a reasonable price, so it always has unlimited demand. The service process includes five activities that are conducted in the sequence described next (the time required for each activity is shown in parentheses): Activity 1: Welcome a guest and offer homemade herb tea (9 minutes). Activity 2: Wash and condition hair (9 minutes). Activity 3: Neck, shoulder, and back stress-release massage (9 minutes). Activity 4: Design the hairstyle and do the hair (23 minutes). Activity 5: Check out the guest (5 minutes). Three servers (S1, S2, and S3) offer the services in a worker-paced line. The assignment of tasks to servers is the following: S1 does Activity 1, S2 does activities 2 and 3, and S3 does activities 4 and 5. a. What is the labor content? b. What is the average labor utilization? c. At a wage rate of $25 per hour, what is the cost of direct labor per customer? d. Mr. K contemplates redesigning the assignment of tasks to servers. For this, Mr. K is evaluating the reassignment of Activity 5 from $3 to $1. What will be the new cost of direct labor? e. Returning to the original question, Mr. K is thinking to add one additional worker to the process. The worker would be assigned to the same set of tasks as one of the current workers. First, decide which set of tasks would benefit from one additional worker, then calculate the process capacity (customers per hour)?