Percentages, Ratio and Averages
CSAT notes on percentages, ratios and averages — the fraction table, successive change and timed practice for UPSC Prelims Paper II.
SyllabusCSAT · Basic numeracy (numbers and their relations, orders of magnitude, etc.) — Class X level
Percentages, ratios and averages carry a large share of CSAT’s basic-numeracy questions, and they reappear inside data-interpretation sets. Master the fraction–percentage table and the successive-change formula and most of these questions become one-line calculations.
Percentages for CSAT
CSAT percentages made fast — the fraction–percentage table, percentage change, successive changes, percentage …
Ratio, Proportion and Averages for CSAT
CSAT ratio and averages with worked examples — combining ratios, ages, mixtures and alligation, partnership, …
Percentages, Ratio and Averages — Practice Questions
CSAT-pattern practice on percentages, ratio and averages — base change, successive change, combined ratios, …
Percentages, Ratio and Averages — Quick Revision
One-page CSAT revision of percentages, ratio and averages: fraction table, successive change, percentage …