SSC CGL Preparation – Day 6

MCQ Practice Set: Percentage

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1. What is 35% of 480?
A) 144
B) 168
C) 152
D) 164

Answer: B) 168
Solution: (35/100) × 480 = 168

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2. A student scored 540 marks out of 600. What is his percentage?
A) 85%
B) 88%
C) 90%
D) 92%

Answer: C) 90%
Solution: (540/600) × 100 = 90%

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3. If A’s salary is 25% more than B’s, then B’s salary is what percent less than A’s?
A) 20%
B) 25%
C) 30%
D) 33.33%

Answer: A) 20%
Solution:
Let B = 100 → A = 125
Difference = 25 → % less = (25/125) × 100 = 20%

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4. If the price of an article is increased by 20% and then decreased by 20%, what is the net change?
A) 4% increase
B) 4% decrease
C) No change
D) 2% increase

Answer: B) 4% decrease
Solution:
Net % change = (20 – 20 – (20×20)/100) = -4%

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5. A number is increased by 20% and the result is 180. What is the original number?
A) 144
B) 150
C) 160
D) 170

Answer: B) 150
Solution:
Let number be x → x × 1.20 = 180 → x = 180 / 1.2 = 150

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6. If 15% of a number is 45, what is the number?
A) 250
B) 300
C) 350
D) 400

Answer: B) 300
Solution: (15/100) × x = 45 → x = 45 × 100 / 15 = 300

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7. The population of a town increases by 10% in a year. If the population is 22,000 now, what was it last year?
A) 19,800
B) 20,000
C) 21,000
D) 21,500

Answer: B) 20,000
Solution: Let population last year = x → x × 1.10 = 22,000 → x = 22,000 / 1.10 = 20,000

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8. A number is decreased by 10% and the result is 270. What is the original number?
A) 300
B) 280
C) 290
D) 275

Answer: A) 300
Solution: x × 0.90 = 270 → x = 270 / 0.90 = 300

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9. If the price of a commodity is increased by 25%, by what percent must the consumption be reduced to keep expenditure same?
A) 15%
B) 20%
C) 25%
D) 20.5%

Answer: B) 20%
Solution:
Let price = ₹100, quantity = 1 → Total = ₹100
New price = ₹125 → Required quantity = 100/125 = 0.8
Reduction = (0.2/1)×100 = 20%

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10. A man spends 85% of his income. If he saves ₹2,250, what is his income?
A) ₹12,000
B) ₹13,000
C) ₹15,000
D) ₹16,000

Answer: C) ₹15,000
Solution:
Savings = 15% of income → 15% of x = 2250
x = 2250 × 100 / 15 = ₹15,000