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primary 6 | Maths | Ratio
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Date Posted: 4 years ago
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ONG PAN HAO GERALD
Ong Pan Hao Gerald's answer
9 answers (Tutor Details)
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Breakdown the question by forming Simultaneous equations
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Sanjana
Sanjana's answer
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In case you're not comfortable with algebra, I'll park this answer here.

If you can recognise that from both the Rectangle and the Square 27cm^2 has been removed to produce the yellow and blue parts respectively, you'll realise that the difference in area between the two remains constant.

Perhaps you can show +27 added to both Y and B in order to make them equal to R and S respectively.