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primary 6 | Maths | Ratio
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Bernice
Bernice

primary 6 chevron_right Maths chevron_right Ratio chevron_right Singapore

Pls help.

Date Posted: 1 year ago
Views: 348
sstrike
Sstrike
1 year ago
concept → item comparison

Method → backwards

in the end
A:H = 1:1 = 1u : 1u

at first
A:H = 3:1 = 3(1u+17) : 1u+17

3(1u+17) - 1u = 65

1u = (65 - 3×17)÷2 = $7 (Ans)

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sstrike
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5332 answers (A Helpful Person)
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Bernice
Bernice
1 year ago
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sstrike
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5332 answers (A Helpful Person)
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