Sally works alone at a hair salon that always has customers waiting. Each customer requests Sally’s signature â€œwash, dry, and styleâ€ package. It takes Sally exactly 10 minutes to wash and dry and exactly 12 minutes to style. For all parts of this question, define the â€œprocessâ€ for a single customer to begin once the customer sits down in the styling chair for a wash and ends once the style is complete. Assume the process is operating at capacity.
1. What is the capacity of the process (in customers per minute or customers per hour)?
Sally gets tired of working solo and hires another stylist, Sam, to help.
Sally is not confident in Sam’s styling abilities, Sam is hired to handle
washing and drying. Sam can wash and dry in 12 minutes. Hand-off times are negligible.
2. What is the capacity of the process now (customers/minute or customers/hour)?
Within a short period, Sam becomes very efficient and can now wash and dry in 8
minutes (faster than Sally). Sallystill takes 12 minutes to style
3. What is the capacity of the process now (customers/minute or customers/hour)?