- 23 One Welcome Sign Flashes Every 8 Seconds And Another Welcome Sign Flashes Every 12 Seconds At A Certain Instant T 1 (15.14 KiB) Viewed 27 times
23. One welcome sign flashes every 8 seconds, and another welcome sign flashes every 12 seconds. At a certain instant, t
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23. One welcome sign flashes every 8 seconds, and another welcome sign flashes every 12 seconds. At a certain instant, t
23. One welcome sign flashes every 8 seconds, and another welcome sign flashes every 12 seconds. At a certain instant, the 2 signs flash at the same time. How many seconds elapse until the 2 signs next flash at the same time? A. 4 B. 10 C. 20 D. 24 E. 96