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Alligation or Mixture

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Quantitative Aptitude – Alligation or Mixture

Solve concentration and mixture problems using alligation rule efficiently.

1. Rule

If mixing two quantities with strengths A and B to get C, ratio = (B−C):(C−A).

2. Application

  • Use rule directly for binary mixtures.
  • For multiple components, combine stepwise using pairwise mixtures.

3. Quick Tips

  • Place strengths correctly above and below.
  • Use alligation grid to avoid confusion.

4. Common Errors

  • Mixing up placement of A, B, and C in formula.

5. Revision Checklist

  • Practice direct and multi-component mix problems.

Summary: Use (B−C):(C−A) quickly with grid to find required ratio for mixtures accurately.