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Home ❯ Quantitative Aptitude ❯ Percentage 2026 AFO Ready

Percentage Quantitative Aptitude — Study Notes & MCQ Practice 2026

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📘 Percentage Master

Basics, Smart Hacks & Shortcuts for IBPS / Govt Exams

1. The Foundation

Percentage means "per hundred". Success in Quant depends on how fast you convert percentages into fractions.

1/2 50%
1/4 25%
1/5 20%
3/4 75%
1/8 12.5%

The Swap Rule

x% of y = y% of x

Example: 25% of 48 = 12

10% Mental Method

• 10%: Shift decimal one place left
• 5%: Half of 10%
• 15%: 10% + 5%

Exam Scenario Shortcut Formula
Increase / Decrease Old × (100 ± x) / 100
Successive Change a + b + (ab / 100)
Profit % (Profit / CP) × 100

Exam Mindset

"Percentage is not just a topic ; it is the foundation of DI, SI-CI, and Profit-Loss."

Priority

Accuracy
>
Speed

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