Ratio & Proportion
View Questions of Ratio & Proportion
Quantitative Aptitude - Ratio & Proportion
Use ratios for part-to-part and part-to-whole comparisons and proportions.
1. Ratios
Ratio a:b = a/b. Compare quantities directly.
2. Proportions
a:b = c:d implies ad = bc. Solve for unknowns quickly.
3. Applications
- Sharing amounts in given ratios: Add parts and divide.
- Converting ratio to percent: a:b = (a/(a+b)) × 100.
4. Quick Tips
- Simplify both terms before solving proportion.
- Use cross-product to verify or find missing term.
5. Common Errors
- Mixing ratio and percent without conversion.
- Forgetting to simplify ratio before using.
6. Revision Checklist
- Be fluent with a:b, b:c split across multiple groups.
- Practice reverse problems (given whole and part find ratio).
Summary: Ratios compare quantities, proportions set equality; simplify early, use cross-multiplication, and convert to percent or share problems as needed.
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