Alice works as a freelancer and plans her work schedule for the week, taking into account her productivity on different days. She works 8 hours a day from Monday to Friday, and on weekends (Saturday and Sunday), she works half the hours of a weekday. Bob, her colleague, works the same number of hours as Alice on weekdays but works double the hours she works on weekends. How many more hours does Bob work than Alice in a week? Let's think step by step and output the final answer within \boxed{}.
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