Javier Keow Zhi Heng's answer to Toh Chen Xin's Primary 5 Maths Rate & Ratio Singapore question.
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Drawing models for this won't help you a lot.
You can think of this as "5 units minus 30" is (13/10) times as much as "4 units minus 30"
You can think of this as "5 units minus 30" is (13/10) times as much as "4 units minus 30"
Date Posted:
6 years ago
By the way, the final answer is cut off.
The last line is
Ken's savings before, 4u =4 x 45 = 180
The last line is
Ken's savings before, 4u =4 x 45 = 180
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