Han Zhi Yuan's answer to Lee's Primary 6 Maths Geometry Singapore question.
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We need to find the lowest common multiple of 4, 6 and 9.
The LCM of the three numbers is 36.
36 minutes after 17:45 is 18:21.
So the three lights will all light again at 18:21.
The LCM of the three numbers is 36.
36 minutes after 17:45 is 18:21.
So the three lights will all light again at 18:21.
Date Posted:
4 years ago
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