the advantage to this is one person taking orders can take orders for many different restraunts. This way all restraunts pool the money for people to take orders to pay their wages. Then these people take orders for many different places causing less waisted labor as people wait for someone to come to the drive through. Think about this if a person can take 1 order a minute that is 60 orders in an hour. Let's say a drive through can only handle 30 people in an hour though. Then you can hire 1 person to work 2 different McDonalds taking orders for both of them thus saving the labor of 1 person.
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