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Question
primary 5 | Maths
| Whole Numbers
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A : B = 1:1 = 1u:1u
at first
A : B = 4:1 = 4u+40 : 1u+10
for A
4u+40 - 1u = 46
u = 2
4u+40
= 4×2+40 = 48 (Ans)
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