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primary 6 | Maths
| Ratio
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Date Posted: 1 year ago
Views: 121
A+B+C = 64 ①②
D+B+C = 36 ①②
① - ②
A-D = 64-36 = 28
A+D = 3(B+C) = 3u
① + ②
A+D + 2(B+C) = 64+36 = 100
3(B+C) + 2(B+C) = 100
B+C = 100÷5 = 20 = 1u
A+D = 3(B+C) = 3×20 = 60
A+D+B+C =60+20 = 80 (Ans)
D+B+C = 36 ①②
① - ②
A-D = 64-36 = 28
A+D = 3(B+C) = 3u
① + ②
A+D + 2(B+C) = 64+36 = 100
3(B+C) + 2(B+C) = 100
B+C = 100÷5 = 20 = 1u
A+D = 3(B+C) = 3×20 = 60
A+D+B+C =60+20 = 80 (Ans)
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Date Posted:
1 year ago
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