The traffic lights at three different road crossings change after every 48 seconds, 72 seconds, and 108 seconds resp. If they change simultaneously at 8 a.m. at what time will they change together again.
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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 a.m. at what time will they change simultaneously again? L.C.M of 48, 72, 108 = 2 x 2 x 2 x 2 x 3 x 3 x 3 = 432 sec.
ranimeas123:
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475
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