Mr K S Popular Hair Salon Offers High Quality Hairstyling Physical Relaxation Services Rea Q34291644

Mr. K’s is a very popular hair salon. It offers high‐qualityhairstyling and physical relaxation services at a reasonableprice.

The service process includes five activities that are conductedin the sequence described below. (The time required for eachactivity is shown in parenthesis):

Activity 1: Welcome a guest and offer homemade herb tea. (12minutes)

Activity 2: Wash and condition hair. (15 minutes)

Activity 3: Neck, shoulder, and back stress release massage. (9minutes)

Activity 4: Design the hairstyle and do the hair. (24minutes)

Activity 5: Check out the guest. (6 minutes)

Three workers (S1, S2, and S3) are staffed to this assemblyline, and the assignment of tasks to each worker is:

S1

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