April Ang Zihui's answer to Psle person's Primary 4 Maths Singapore question.

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April Ang Zihui
April Ang Zihui's answer
6 answers (Tutor Details)
1st
The first thing you should do is to list down the multiples of 9 and 12 :)
When you list down the multiples of 9, it means that Bus A arrives every 9 minutes (1:09pm.. 1:18pm.. etc)
Find the common multiple of 9 and 12 like i did in the photo, then add it to the time!
Psle person
Psle Person
2 years ago
Thanks a lot