Mathematics · Ratio and Proportion
If R : S = 7 : 2, then what is the value of (R - S) : (R + S)?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 15 : 7
- 25 : 11
- 35 : 9✓
- 45 : 8
Correct answer
5 : 9
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