Mathematics · Ratio and Proportion
If A : B = 1 : 3, B : C = 4 : 3, and C : D = 5 : 7, then what is the combined ratio A : B : C : D?
- 120 : 60 : 45 : 63✓
- 220 : 60 : 43 : 63
- 320 : 58 : 45 : 63
- 418 : 60 : 45 : 63
Correct answer
20 : 60 : 45 : 63
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