Paper I · 9 Logical Reasoning & Analytical Ability · 9.2 Algebra: equations, identities and progressions

9.2.1 Linear equations in one and two variables: word problems

Name the unknown, write one equation for each fact given, and solve; most word problems in aptitude papers are one or two linear equations in disguise.

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

Key terms

  • linear equation
  • simultaneous equations
  • substitution
  • elimination
  • consecutive numbers
  • ages
  • coins and notes
  • negative marking
  • heads and legs
  • consistency

What this note covers

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

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