Q. The traffic lights at three different road crossings change after 24 seconds, 36 seconds and 54 seconds respectively. If they all change simultaneously at 10 : 15 : 00 AM, then at what time will they again change simultaneously?

• A. 10 : 22 : 12 AM
• B. 10 : 17 : 02 AM
• C. 10 : 18 : 36 AM
• D. 10 : 16 : 54 AM

Correct Answer: C