Clock A was correct at midnight, but lost exactly 1 minute an hour from then on. It stopped 1 hour ago (B) , having run for less

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问题 Clock A was correct at midnight, but lost exactly 1 minute an hour from then on. It stopped 1 hour ago (B) , having run for less than 12 hours. What is the time now?

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答案6.00 am.

解析 (从A图到B图可知,时钟走了5个小时,但是一次差1分钟,共慢了5分钟,所以时钟所显示的4:50实际应为5点钟,因其是一个小时之前停的,所以现在应为6点钟。)
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