Mathematics · LCM and HCF
The traffic lights at three different road crossings change after every 48 seconds, 72 seconds, and 108 seconds respectively. If they all change simultaneously at 8:20:00 hours, then at what time will they again change simultaneously?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 18 : 27 : 12 hrs✓
- 28 : 27 : 48 hrs
- 38 : 27 : 24 hrs
- 48 : 27 : 36 hrs
Correct answer
8 : 27 : 12 hrs
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