Question: A small bank is trying to determine how many tellers to employ. The total cost of employing a teller is $100 per day, and a

A small bank is trying to determine how many tellers to employ. The total cost of employing a teller is $100 per day, and a teller can serve an average of 60 customers per day. On average, 50 customers arrive per day at the bank, and both service times and inter-arrival times are exponentially distributed. If the delay cost per customer day is $100, how many tellers should the bank hire?

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