Simple Ratios — Prelims Strategy

Prelims Strategy

For Prelims, the strategy for simple ratios should focus on speed, accuracy, and pattern recognition. Begin by solidifying the core definitions: what a ratio is, its notation, and the importance of simplification and unit consistency.

Practice converting ratios to fractions, decimals, and percentages seamlessly, as this is a common step in many problems. The next step is to master the common problem types: age problems, mixture problems, speed-time-distance ratios, and proportional division.

For each type, identify the underlying ratio principle and the standard method of setting up equations (e.g., using 'x' for unknown quantities). Develop the habit of simplifying ratios immediately. Pay close attention to the order of quantities in a ratio, as reversing it is a frequent trap.

Practice a wide variety of questions, including those with three or more quantities. Crucially, develop mental math skills for quick ratio simplification and basic calculations. Finally, integrate ratio concepts with other topics like percentages and averages, as CSAT questions often combine these.

Vyyuha's 'RISE Method' (Reduce, Identify, Solve, Evaluate) provides a systematic approach to tackle any ratio problem under timed conditions.