Customers arrive per hour at a small post office

Reference no: EM131106291

On average, 50 customers arrive per hour at a small post office. Interarrival times are exponentially distributed. Each window can serve an average of 25 customers per hour. Service times are exponentially distributed. It costs $25 per hour to open a window, and the post office values the time a customer spends waiting in line at $15 per customer hour. To minimize expected hourly costs, how many postal windows should be opened?

Reference no: EM131106291

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