Paper I · 16 Logical Reasoning, Analytical Ability & Data Interpretation · 16.4 Ratio, ages, averages and mixtures

16.4.1 Ratio and proportion

A ratio compares two quantities of the same kind by division; a proportion says two ratios are equal. Almost every ratio question is solved by writing each quantity as "parts" (3k, 4k) and finding the value of one part.

  • TGPSC MPSO / ASO · Paper I
  • Standard level
  • 9 min read
  • Full course

Key terms

  • ratio
  • proportion
  • compound ratio
  • duplicate ratio
  • sub-duplicate ratio
  • mean proportional
  • third proportional
  • fourth proportional
  • dividing in a ratio

What this note covers

  1. Core factsFoundation
  2. ExplainedStandard
  3. DeeperAdvanced
  4. Common trapsFoundation
  5. Quick revisionFoundation

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