The traffic lights at three different road crossings change after every 36 seconds,75 seconds, and 80 seconds respectively. If they change simultaneously at 7 AM after what time will they change again simultaneously?
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The traffic lights at three different road crossings change after every 48 seconds 72 seconds and 108 seconds respectively if they change simultaneously at 7 am at what time will they change simultaneously again
Explanation: We know that in order to find the time when the three lights will change simultaneously again after 7 a.m., we need to find the LCM of 48, 72, and 108. Hence, after converting 432 seconds into minutes and seconds, we get: 432 seconds = 7 minutes and 12 seconds.
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