sstrike's answer to Wincy's Primary 6 Maths Fractions Singapore question.

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sstrike
Sstrike
2 years ago
alternative

3(1u+3p) = 3×105 = 315

3u+9p = 315

3u+2p = 126

7p = 315-126 = 189

5p = 5×189÷9 = 135 (Ans)