Mathematics · Ratio and Proportion
If X ∶ Y = 4 ∶ 5, Y ∶ Z = 5 ∶ 7 and Z ∶ W = 7 ∶ 9, then X ∶ W is equal to:
- 12 ∶ 9
- 24 ∶ 9✓
- 33 ∶ 11
- 43 ∶ 7
Correct answer
4 ∶ 9
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