Mathematics · Ratio and Proportion
If A : B = 3 : 4, B : C = 5 : 7, and C : D = 8 : 9, then A : D is equal to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 110 : 21✓
- 221 : 10
- 37 : 3
- 43 : 7
Correct answer
10 : 21
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