Nurin Insyirah's answer to Thanu's Primary 6 Maths question.

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Nurin Insyirah
Nurin Insyirah's answer
21 answers (Tutor Details)
From 3 units, change it to 12 units in total. 3 units still remains the same, so the ratio is still based on the difference of 4:3. Work backwards to find total at first. And then work towards the end.