A

Admin • 830.13K Points
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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 - Option(C)
  • Views: 9
  • Filed under category Math
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Explanation by: Admin
LCM of 24, 36 and 54 seconds

= 216 seconds

= 3 minutes 36 seconds

= 10 : 18 : 36 a.m.

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