Thursday, 2 April 2026

 

Page 2 – Quant (Percentage)

Problem • Step-wise Solution • Tricks


Percentage calculations

Q1. Find 25% of 800

Step 1: Convert percentage

25% = 25/100 = 1/4

Step 2: Apply fraction

800 ÷ 4 = 200

Answer: 200

Trick: 25% = divide by 4


Q2. Find 20% of 500

Step 1: Convert percentage

20% = 1/5

Step 2: Apply fraction

500 ÷ 5 = 100

Answer: 100

Trick: 20% = divide by 5


Q3. Find 10% of 350

Step 1: 10% means divide by 10

Step 2: 350 ÷ 10 = 35

Answer: 35

Trick: Move decimal one step left


Q4. Find 50% of 240

Step 1: Convert percentage

50% = 1/2

Step 2: Apply fraction

240 ÷ 2 = 120

Answer: 120

Trick: 50% = half


Q5. Find 75% of 400

Step 1: Convert percentage

75% = 3/4

Step 2: Apply fraction

400 ÷ 4 = 100 → 100 × 3 = 300

Answer: 300

Trick: 75% = 3/4


Q6. Find 30% of 250

Step 1: Convert percentage

30% = 30/100

Step 2: Multiply

(250 × 30) ÷ 100 = 75

Answer: 75

Trick: Cancel zeros before multiplying


Quick Formula

Percentage = (Value / Total) × 100


Shortcut Table

  • 10% = divide by 10
  • 20% = divide by 5
  • 25% = divide by 4
  • 50% = divide by 2
  • 75% = multiply by 3/4

Final Tip

Convert percentage into fraction → fastest method


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