Customers arrive at a retail store at a rate of 25 per hour during business hours. Each cashier, on average, takes 10 minutes to process a customer. Recent changes in wage rates have caused the retail manager to reexamine the question of how many cashiers to use. The new hourly wage and benefits for each cashier is $33 per hour; On the other hand, the cost of waiting for one customer is $27. Find the average wait time in the queue and the system for each customer.

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