Ren Jie Chua's answer to Chrissy Chua's Primary 5 Maths question.

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Ren Jie Chua
Ren Jie Chua's answer
6 answers (A Helpful Person)
1st
By finding the number of non Singaporeans from the number of Singaporeans, you can equate that number to 1/3.
Afterwards you can form a equation and derive the total number of participants from that equation.