Percentages — Study Plan
TANCET · Quantitative Aptitude
Step-by-step Percentages study plan for TANCET Quantitative Aptitude 2026 — structured month-wise approach to mastering this chapter.
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A structured approach to studying Percentages for TANCET Quantitative Aptitude.
Study Plan for Percentages
Day 1–2: Learn the Theory
Study the chapter thoroughly. Note down definitions, formulas, and key concepts.
Day 3: Practice Problems
Solve practice questions and previous year TANCET problems. There are 55 questions available for this chapter.
Day 4: Revise & Test
Revise key formulas and concepts without looking at notes. Take a practice quiz to test your understanding.
What to Focus On
- Percentage literally means 'per hundred' or 'out of 100'
- Formula: Percentage = (Part/Whole) × 100
- The base or denominator is always essential for percentage calculations
- Formula: % Change = ((New - Old) / Old) × 100
- Always use the original value as the base for calculation
- Percentage increase: when new value > original value
- Each change is applied to the result of the previous change
- Formula for two changes: Net change = a + b + (ab/100)
- Order of changes doesn't matter for the final result
Common Mistakes to Avoid
If A is 20% more than B, then B is 20% less than A
Two successive changes of +10% and -10% result in no net change
Percentage increase in product equals sum of individual percentage increases
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