Percentage – Advanced Tricks + Exam Traps
Master percentage with shortcut formulas and avoid common exam traps.
🔥 Shortcut Tricks
- 10% = divide by 10
- 1% = divide by 100
- 25% = 1/4, 50% = 1/2
- Successive % = a + b + (ab/100)
Solve in 5 Seconds
Q1: 25% of 480 = ?
Answer: 480 ÷ 4 = 120
Q2: 10% of 350 = ?
Answer: 35
Exam Trap Questions
Q3: A number increases by 20% and then decreases by 20%. Find net change.
Trap: Not zero!
Solution:
20 − 20 − (20×20/100) = −4%
Answer: 4% loss
Q4: Price increases by 25%, then decreases by 20%. Final change?
Solution:
25 − 20 − (25×20/100) = 0%
Answer: No change
Q5: If 40% of a number is 80, find number.
Solution:
Number = (80×100)/40 = 200
Q6: Find 15% of 360
Shortcut:
10% = 36, 5% = 18
Answer: 54
❌ Most Students Mistake
- Thinking +20% and −20% cancel out
- Not using fraction conversion
- Doing long multiplication
Speed Booster Tip
Always convert percentage into fraction for faster solving.
Shaktimatha Learning
Quant • Percentage • Bank Exam Preparation
Quant • Percentage • Bank Exam Preparation
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