Paper I · 9 Logical Reasoning & Analytical Ability · 9.4 Ratio, ages, averages and mixtures

9.4.3 Problems on ages

Age problems turn words into one or two linear equations; the key fact is that the difference between two people's ages never changes, while their ratio does.

  • APPSC Paper I · Paper I
  • Standard level
  • 8 min read
  • Full course

Key terms

  • ages
  • present age
  • years ago
  • years hence
  • age ratio
  • constant difference
  • linear equations
  • children at equal intervals

What this note covers

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

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