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primary 5 | Maths
| Whole Numbers
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Is the answer for Q2 675? Correct me if I'm wrong.
Date Posted: 2 years ago
Views: 522
【total unchanged - internal transfer】
at first
A:G:T = 1:2:3 = 3:6:9
in the end
A:G:G-A:T = 2:7:5:9
9×75÷5 = 135 (Ans)
Check
at first
A → ⅓ × 135 = 45
G → ⅔ × 135 = 90
⅓ A = ⅓ × 45 = 15
in the end
A → 45-15 = 30
G → 90+15 = 105
G-A
= 105-30
= 75 ✓✓✓
at first
A:G:T = 1:2:3 = 3:6:9
in the end
A:G:G-A:T = 2:7:5:9
9×75÷5 = 135 (Ans)
Check
at first
A → ⅓ × 135 = 45
G → ⅔ × 135 = 90
⅓ A = ⅓ × 45 = 15
in the end
A → 45-15 = 30
G → 90+15 = 105
G-A
= 105-30
= 75 ✓✓✓
Thank you.
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Date Posted:
2 years ago
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