Question

The traffic lights at three different road closing change after every 48 seconds , 72 seconds and 108 seconds respectively. If they change simultaneously at 7:00 a.m. , at what time will they change simultaneously again ?​

Answer 1

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.

Answer 2

Answer:

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.

Explanation:

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