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a certain clock marks every hour by striking a number of times equal to the hour, and the time required for a stroke is exactly equal to the time interval between strokes. At 6:00 the time lapse between the beginning of the first stroke and the end of the last stroke is 22 seconds. at 12:00, how many seconds elapse between the beginning of the first stroke and the end of the last stroke? 一种钟每个小时敲的下数和那个小时相等。(比如2点敲2下,3点敲3下),敲一下所需要的时间和每敲一下中间间隔相等。在6点时,从第一下敲钟到最后一下敲是22秒,问在12点时,第一下敲钟到最后一下之间是多长时间? 我的答案也是46秒 |