Jael Png's answer to Justin's Primary 6 Maths Ratio Singapore question.

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Jael Png
Jael Png's answer
26 answers (A Helpful Person)
Because the cow is 5/7 of sheep & horse, so we have to make the sheep & horse units divisible by 7. Then we get their total and find the 5/7 which is the cows unit. And then move on from there.