Mathematics · LCM and HCF
The traffic lights at three different signal points change after every 35 s, 45 s and 75 s respectively. If all change simultaneously at 6 : 20 : 15 hours, then at what time will they change again simultaneously?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 110 : 30 : 30 hours
- 26 : 40 : 35 hours
- 36 : 46 : 30 hours✓
- 48 : 18 : 20 hours
Correct answer
6 : 46 : 30 hours
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