Percentage MCQs with Answers and Explanations for Competitive Exams

Question #381

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A student answered 22 out of 30 correctly. Percentage correct:

A. 75%

B. 72%

C. 73.33%

D. 70%

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Correct Answer: Option C

Explanation:
(22/30)×100 ≈ 73.33%.

This question belongs to: Maths Percentage

Question #382

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45% of a number is 135. The number is:

A. 280

B. 250

C. 300

D. 320

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Correct Answer: Option C

Explanation:
0.45x = 135 → x = 300.

This question belongs to: Maths Percentage

Question #383

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If 25% of A = 35% of B = 70, then A + B = ?

A. 480

B. 420

C. 380

D. 460

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Correct Answer: Option A

Explanation:
A = 70/0.25 = 280, B = 70/0.35 = 200, sum = 480.

This question belongs to: Maths Percentage

Question #384

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120 increased by 18% is:

A. 140.2

B. 138.4

C. 141.6

D. 136.6

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Correct Answer: Option C

Explanation:
120 × 1.18 = 141.6.

This question belongs to: Maths Percentage

Question #385

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If the price of wheat increases by 30%, by how much percent must consumption be reduced to keep expenditure constant?

A. 25%

B. 22.5%

C. 20%

D. 23.08%

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Correct Answer: Option D

Explanation:
Reduction % = (30/130)×100 ≈ 23.08%.

This question belongs to: Maths Percentage

Question #386

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In an election, 20% voters did not vote. Winner got 48% of total votes and won by 2400 votes. Total voters:

A. 15000

B. 10000

C. 12500

D. 18000

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Correct Answer: Option A

Explanation:
Votes cast = 80%. Winner got 48% of total, loser got 80% - 48% = 32% of total. Margin = 48% - 32% = 16% of total = 2400 → total = 2400/0.16 = 15000.

This question belongs to: Maths Percentage

Question #387

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A number is increased by 10%, then increased by 25%, then decreased by 10%. Net percentage change:

A. 25% increase

B. 22.5% increase

C. 23.75% increase

D. 20% increase

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Correct Answer: Option C

Explanation:
1.1 × 1.25 × 0.9 = 1.2375, increase 23.75%.

This question belongs to: Maths Percentage

Question #388

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If A's salary is 25% more than B's, by what percent is B's salary less than A's?

A. 18%

B. 20%

C. 25%

D. 22.5%

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Correct Answer: Option B

Explanation:
B less % = (25/125)×100 = 20%.

This question belongs to: Maths Percentage

Question #389

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Price of petrol increased by 30%. To keep expenditure same, consumption must reduce by:

A. 20%

B. 23.08%

C. 25%

D. 30%

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Correct Answer: Option B

Explanation:
Reduction % = (30/130)×100 ≈ 23.08%.

This question belongs to: Maths Percentage

Question #390

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In an exam, 40% failed in Science, 30% in Social, 20% in both. Pass percentage is:

A. 50%

B. 40%

C. 55%

D. 45%

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Correct Answer: Option A

Explanation:
Failed in at least one = 40+30-20 = 50%, pass = 50%.

This question belongs to: Maths Percentage

Question #391

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Population increases 6% annually. Present 1,50,000, after 2 years population:

A. 1,75,000

B. 1,65,000

C. 1,68,540

D. 1,70,000

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Correct Answer: Option C

Explanation:
1,50,000 × 1.06² = 1,68,540.

This question belongs to: Maths Percentage

Question #392

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Machine depreciates 15% per year. Present value Rs. 72,250, value 2 years ago was:

A. 1,05,000

B. 90,000

C. 95,000

D. 1,00,000

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Correct Answer: Option D

Explanation:
Value 2 years ago = 72250 / (0.85×0.85) = 72250 / 0.7225 = 1,00,000.

This question belongs to: Maths Percentage

Question #393

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A student scored 30% marks and failed by 30 marks. Another scored 42% marks and got 30 marks more than passing. Pass marks are:

A. 180

B. 200

C. 160

D. 150

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Correct Answer: Option A

Explanation:
Let max M. 0.3M + 30 = 0.42M - 30 → 0.12M = 60 → M = 500. Pass = 0.3×500 + 30 = 180.

This question belongs to: Maths Percentage

Question #394

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A man spends 50% of his income. His income rises by 50% and expenditure by 20%. Percentage increase in savings is:

A. 60%

B. 90%

C. 70%

D. 80%

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Correct Answer: Option D

Explanation:
Let income = 100, exp = 50, sav = 50. New income = 150, exp = 60, sav = 90. Increase = 40 on 50 = 80%.

This question belongs to: Maths Percentage

Question #395

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Two numbers are 25% and 40% more than a third number. Their ratio is:

A. 25:28

B. 5:7

C. 15:17

D. 5:6

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Correct Answer: Option A

Explanation:
Third = 100, first = 125, second = 140, ratio = 125:140 = 25:28.

This question belongs to: Maths Percentage

Question #396

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A number increased by 25% then by 20% becomes 180. Original number:

A. 120

B. 100

C. 130

D. 110

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Correct Answer: Option A

Explanation:
x × 1.25 × 1.2 = 1.5x = 180 → x = 120.

This question belongs to: Maths Percentage

Question #397

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Two alloys have copper 70% and 40%. Mixed to get 55% copper. Ratio of mixing:

A. 3:2

B. 2:1

C. 1:2

D. 1:1

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Correct Answer: Option D

Explanation:
Alligation: (70-55):(55-40) = 15:15 = 1:1.

This question belongs to: Maths Percentage

Question #398

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72% passed an exam. Failures = 560. Total examinees:

A. 2000

B. 1800

C. 2500

D. 2200

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Correct Answer: Option A

Explanation:
28% = 560, total = 560/0.28 = 2000.

This question belongs to: Maths Percentage

Question #399

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25% reduction in sugar price lets a person buy 8 kg more for Rs. 200. Reduced price per kg:

A. Rs. 5.5

B. Rs. 5

C. Rs. 6.25

D. Rs. 6

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Correct Answer: Option C

Explanation:
Original price x, consumption y, xy=200. New 0.75x(y+8)=200 → 150 + 6x = 200 → 6x=50 → x=25/3≈8.33, reduced price 0.75*x = 6.25. So Rs. 6.25.

This question belongs to: Maths Percentage

Question #400

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Difference between 56% and 34% of a number is 132. The number is:

A. 600

B. 650

C. 550

D. 500

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Correct Answer: Option A

Explanation:
22% of number = 132 → number = 132/0.22 = 600.

This question belongs to: Maths Percentage

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