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
4. Quick Tips
5. Common Errors
6. Revision Checklist
Summary: Ratios compare quantities, proportions set equality; simplify early, use cross-multiplication, and convert to percent or share problems as needed.