Q1. What is 25% of 80?
(a) 15
(b) 20
(c) 25
(d) 30
Answer: (b)
Explanation: 25% of 80 = (25/100)×80 = 0.25×80 = 20.
Q2. Convert 3/5 into a percentage.
(a) 30%
(b) 40%
(c) 50%
(d) 60%
Answer: (d)
Explanation: (3/5)×100 = 60%.
Q3. If a number is increased by 20% and becomes 120, what was the original number?
(a) 90
(b) 95
(c) 100
(d) 105 Answer: (c)
Explanation: Let original = x. x + 0.20x = 1.20x = 120 → x = 120/1.20 = 100.
Q4. A shopkeeper sells an item for ₹150, making a profit of 25%. What was the cost price?
(a) ₹100
(b) ₹110
(c) ₹120
(d) ₹130
Answer: (c)
Explanation: Selling price = Cost price × (1+25/100) = 1.25×CP. CP = 150/1.25 = ₹120.
Q5. What percent of 250 is 50?
(a) 10%
(b) 15%
(c) 20%
(d) 25%
Answer: (c)
Explanation: (50/250)×100 = 20%.
Q6. If the price of a commodity decreases from ₹80 to ₹64, what is the percentage decrease?
(a) 15%
(b) 20%
(c) 25%
(d) 30% Answer: (b)
Explanation: Decrease = 80‑64 = 16. Percentage decrease = (16/80)×100 = 20%.
Q7. 40% of a number is 24. What is 60% of the same number?
(a) 30
(b) 36
(c) 40
(d) 48
Answer: (b)
Explanation: Number = 24/(0.40) = 60. 60% of 60 = 0.60×60 = 36.
Q8. A student scored 45 marks out of 60. What is his percentage score?
(a) 65%
(b) 70%
(c) 75%
(d) 80%
Answer: (c)
Explanation: (45/60)×100 = 75%.
Q9. The population of a town increased from 20,000 to 25,000. What is the percentage increase?
(a) 20%
(b) 25%
(c) 30%
(d) 35%
Answer: (b) Explanation: Increase = 5,000. Percentage increase = (5,000/20,000)×100 = 25%.
Q10. What is 12.5% expressed as a fraction in simplest form? (a) 1/6
(b) 1/8
(c) 1/10
(d) 1/12
Answer: (b) Explanation: 12.5% = 12.5/100 = 125/1000 = 1/8.
Q11. If 15% of a number is 18, what is the number?
(a) 100
(b) 110
(c) 120
(d) 130 Answer: (c)
Explanation: Number = 18/0.15 = 120.
Q12. A product is marked at ₹500 and sold at a discount of 10%. What is the selling price?
(a) ₹450
(b) ₹460
(c) ₹470 (d) ₹480
Answer: (a)
Explanation: Discount = 10% of 500 = ₹50. Selling price = 500‑50 = ₹450.
Q13. Convert 0.375 to a percentage.
(a) 3.75%
(b) 37.5%
(c) 375%
(d) 0.375%
Answer: (b)
Explanation: 0.375×100 = 37.5%.
Q14. What percent of a day is 6 hours?
(a) 15%
(b) 20%
(c) 25%
(d) 30% Answer: (c)
Explanation: (6/24)×100 = 25%.
Q15. After a 30% reduction, the price of an item is ₹210. What was the original price?
(a) ₹260
(b) ₹280 (c) ₹300
(d) ₹320
Answer: (c)
Explanation: Original price × (1‑0.30) = 210 → Original price = 210/0.70 = ₹300.
Q16. If A is 20% more than B, and B is 50, what is A?
(a) 55
(b) 60
(c) 65
(d) 70
Answer: (b)
Explanation: A = B + 20% of B = 50 + 0.20×50 = 50 + 10 = 60.
Q17. What is the percentage equivalent of the fraction 7/20?
(a) 28%
(b) 30%
(c) 35%
(d) 40%
Answer: (c) Explanation: (7/20)×100 = 35%.
Q18. A sum of money becomes ₹1,210 in 2 years at 10% simple interest per annum. What is the principal?
(a) ₹900
(b) ₹1,000
(c) ₹1,100
(d) ₹1,200
Answer: (b)
Explanation: Amount = P + (P×R×T)/100 = P(1+0.10×2) = P×1.20 = 1,210 → P = 1,210/1.20 = ₹1,008.33 ≈ ₹1,000 (approx). Actually exact: 1,210/1.2 = 1,008.33, none match. Let’s adjust question: Use compound? Better to avoid rounding. Let’s redo Q18.
We need a clean number. Choose principal such that amount is nice. For 2 years at 10% SI, amount = P(1+0.20)=1.2P. So choose P=1000 → amount=1200. Let’s set amount 1200.
Q18. A sum of money becomes ₹1,200 in 2 years at 10% simple interest per annum. What is the principal?
(a) ₹900
(b) ₹1,000
(c) ₹1,100
(d) ₹1,200
Answer: (b)
Explanation: Amount = P(1+RT/100) = P(1+0.10×2)=1.2P → P = 1200/1.2 = ₹1,000.
Q19. The price of a laptop is increased by 15% and then decreased by 15%. What is the net change in price?
(a) No change
(b) 2.25% increase
(c) 2.25% decrease
(d) 2.5% decrease
Answer: (c)
Explanation: After increase: price ×1.15. After decrease: ×0.85 → overall factor =1.15×0.85=0.9775 → a decrease of (1‑0.9775)=0.0225=2.25%.
Q20. What is 33⅓% of 90?
(a) 25
(b) 30 (c) 35
(d) 40
Answer: (b)
Explanation: 33⅓% = 1/3. (1/3)×90 = 30.
Q21. If 60% of a number is 48, what is 40% of the same number?
(a) 24
(b) 32
(c) 36 (d) 40
Answer: (b)
Explanation: Number = 48/0.60 = 80. 40% of 80 = 0.40×80 = 32.
Q22. A bag contains 40 red and 60 blue balls. What percentage of the balls are red?
(a) 30%
(b) 40%
(c) 50%
(d) 60%
Answer: (b) Explanation: Total balls = 100. Red% = (40/100)×100 = 40%.
Q23. The price of rice fell from ₹40 per kg to ₹32 per kg. What is the percentage decrease? (a) 15%
(b) 20%
(c) 25%
(d) 30%
Answer: (b)
Explanation: Decrease = 8. Percentage decrease = (8/40)×100 = 20%.
Q24. A student needs to score at least 75% to pass. If the maximum marks are 200, what is the minimum marks required to pass?
(a) 130
(b) 140
(c) 150
(d) 160
Answer: (c)
Explanation: 75% of 200 = 0.75×200 = 150.
Q25. Express 0.08 as a percentage.
(a) 0.8%
(b) 8%
(c) 80%
(d) 0.08%
Answer: (b)
Explanation: 0.08×100 = 8%.
