Question

a traffic light at three different road Crossings change after 48 seconds, 72 seconds, 108 seconds.
if they change at 8 a.m at what time will they change together again..



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Answer 1

Answer:

it will be the LCM of given numbers.

I.e. light change together again after 432 seconds from 8 am.

Answer 2

at 8:07 min :2 second

hope it help you