Question: On average, 3 0 cars enter the queue for the car wash per hour and are served at that rate. On average, a car waits

On average, 30 cars enter the queue for the car wash per hour and are served at that rate. On average, a car waits 12 minutes in the queue to be served.
On average, how many cars wait in the queue? (Hint: Use Little's Law, look for I)
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On average, 30 cars enter the queue for the car wash

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