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Please do your workings/ draw your models according to how your school maths teacher has taught you. This should just be a reference for you :) jiayous!
Date Posted:
7 years ago
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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.
Date Posted:
7 years ago