The traffic lights at three different road crossings change after every 50 seconds, 120 seconds and 150 seconds. If they start changing simultaneously at 7:30 a.m., after how much time they change again simultaneously?
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The traffic lights at three different road crossings change after every 50 seconds, 120 seconds and 150 seconds. If they start changing simultaneously at 7:30 a.m., after how much time they change again simultaneously
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