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Question
primary 5 | Maths
| Whole Numbers
3 Answers Below
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Pls help me with this qn. Thx.
Date Posted: 2 years ago
Views: 361
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Date Posted:
2 years ago
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1p is 1 part, 1u is 1 unit. Parts and Units are different sized boxed in the model diagram.
Date Posted:
2 years ago
if u prefer the single child → u
instead of 2 kids → u , p
【kind of simultaneous equations solving in Sec】
wish this vertical model can help a bit
backwards【ratio way】
$10 ÷ 2 = $5
left
P : G = 2:1 = 2(u+5) : u+5
spent
P : G (D:B)= 1:2 = 2u : 4u
2(u+5) + u+5 + 2 + 4u = $285
u = $30
2u = $60 (Ans)
instead of 2 kids → u , p
【kind of simultaneous equations solving in Sec】
wish this vertical model can help a bit
backwards【ratio way】
$10 ÷ 2 = $5
left
P : G = 2:1 = 2(u+5) : u+5
spent
P : G (D:B)= 1:2 = 2u : 4u
2(u+5) + u+5 + 2 + 4u = $285
u = $30
2u = $60 (Ans)
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