The traffic lights at 3 different roads change after every 48 sec, 72 sec, 108 sec respectively. If they all change simultaneously at 9:15 AM then at what time will they again change simultaneously.	Pick:
A) 9:22:12  B) 9:42:15  C) 10:15:24  D) 9:54:12  E) 10:01:20
LCM of 48,72,108 = 432 = 7mnts 12sec   The lines will change every 7m 12sec   The light will change again after 9:15 9:22:12M is = 9:15+0:07:12 = 9:22:12   9:22:12nswer is 9:22:12
<result>A</result>
The traffic lights at 3 different roads change after every 48 sec, 72 sec, 108 sec respectively. If they all change simultaneously at 9:15 AM then at what time will they again change simultaneously.