A train travels from City X to City Y, which are 660 kilometers apart. After 2 hours, the train has traveled 240 kilometers. If the train continues to travel at the same speed, how many more hours will it take to reach City Y? Additionally, if a second train leaves City Y at the same time heading towards City X at a speed that is 1.5 times faster than the first train, how long will it take for the two trains to meet? Let's think step by step and output the final answer within \boxed{}.
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