Cheng's answer to Anugerah's Primary 6 Maths Ratio Singapore question.
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Draw the two models of before and after first, then by comparing you can find that 3u+80 is equals to the sum of 130 Tiffany baked and the 100 Wendy gave away, hence equating them together you can find u and find the value
Date Posted:
3 years ago
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