A manicure spa is structured as a two-stage process. Upon arrival, customers wait in a common area an average of 6 minutes before proceeding to the first available manicurist. There is a total of six manicurists. The average time for a manicure is 16 minutes regardless of the manicurist providing it. Customers then proceed to pay, but they typically must wait in line an average of 2 minutes before they are able to do so since there is only one cashier who takes on average 4 minutes to process each payment.
(a.) What is the cycle time of the two-stage process?
(b.) What is the capacity of the two-stage process?
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