Question

the traffic lights at three different road crossings change after every 48 seconds 72 seconds and 108 seconds respectively .if they changed simulantaneously and sleep at 7 a.m. at what time will they change simulantaneously again​

Answer 1

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.

Step-by-step explanation:

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