Percentages

🟢 Lite — Quick Review (1h–1d)

Rapid summary for last-minute revision before your exam.

Percentages — Quick Facts Core concept: Percentage means “per hundred” — express any fraction as x/100 to convert easily High-yield points: Successive percentage changes compound (a 10% rise then 10% fall ≠ back to start); percentage increase = (new−old)/old × 100 ⚡ Exam tip: When an option says “increased by 20%”, check whether it’s relative to original or already-modified value

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🟡 Standard — Regular Study (2d–2mo)

Standard content for students with a few days to months.

Percentages — Study Guide Overview: Percentages is part of the core syllabus Key concepts: Build a clear understanding of fundamentals Standard questions: Typical patterns seen in competitive exams

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🔴 Extended — Deep Study (3mo+)

Comprehensive coverage for students on a longer study timeline.

Percentages — Comprehensive Notes Full coverage: Percentages with detailed explanation Extended theory: Deeper understanding for thorough preparation Practice: Solve previous year questions and standard textbook exercises

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