Question: A popular bar & restaurant experiences a regular evening rush. starting at 9pm, when no queue exists, a new customer group arrives every two minutes.

A popular bar & restaurant experiences a regular evening rush. starting at 9pm, when no queue exists, a new customer group arrives every two minutes. customer groups are seated immediately and remain at their table for one hour. if twenty tables are available, what will be the length of the queue at 10pm? at 11pm?

a phone center opens at 8pm. customers require ten minutes to process. the cost of customer assistants is 12 per hour and the estimated cost of waiting is 0.1 per minute per customer. suppose one hundred customers call immediately at 8pm but no more until the phone center closes at 9pm. what are the serving and waiting and waiting cost if the phone center employs five customer assistants? what if it employs twelve customer assistants?

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