sstrike's answer to kinn yong's Primary 4 Maths Singapore question.
Thanks so much Sstrike! can u further explain how you derive this?
At first
C-T = 7-1=6
In the end
C-T = 3-1=2
How to align the difference to be same ?
As this is P4 question
Not learn ratio (P5) yet
So model is drawn for your reference
C-T = 7-1=6
In the end
C-T = 3-1=2
How to align the difference to be same ?
As this is P4 question
Not learn ratio (P5) yet
So model is drawn for your reference
i divide the 2 parts into 6?
R u parents?
6 parts divided by 2
2×?=6u
6 parts divided by 2
2×?=6u
at first
C:T:C-T = 7:1:6
in the end
C:T:C-T = 3:1:2 = 9:3:6
change
= 9-7 = 3-1 = 2 units
3u = 120
tables in total (after)
1 unit = 120÷3 = 40
2u = 2×40 = 80
All in total bought
2×80 = 160 (Ans)
C:T:C-T = 7:1:6
in the end
C:T:C-T = 3:1:2 = 9:3:6
change
= 9-7 = 3-1 = 2 units
3u = 120
tables in total (after)
1 unit = 120÷3 = 40
2u = 2×40 = 80
All in total bought
2×80 = 160 (Ans)
no
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