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Engineering, 14.10.2021 01:00 cat216

At a single toll booth, you were able to observe an average vehicle arrival rate of 10 vehicles per minute starting from 7:00 AM. 40 minutes later, average vehicle arrival rate has become 4 vehicles per minute and continues throughout the day at that rate. If the toll booth is able to process each vehicle once every 10 seconds, how many minutes after 7:00 AM will the first queue clear up?

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