Michael and Sarah are planning a road trip. Michael plans to drive from City A to City B at an average speed of 60 miles per hour. Sarah will drive from City B to City C at an average speed of 50 miles per hour. If the total distance from City A to City C is 330 miles, and the entire trip takes 6 hours, how far is it from City A to City B? Let's think step by step and output the final answer within \boxed{}.
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