Question

011 The traffic lights at three different road crossings change after every 60 seconds, 72 seconds and 10% seconds respectively. If they change simultaneously at 8 am. At what time, will they change simultaneously again

please help me​

Answer 1

Answer:

Solution. After 360 seconds they will change again i.e after six minutes they will change again i.e at 8.06 am they will change again simultaneously.