Current Affairs MCQs April 2024 - [100 Questions]

Current Affairs Most Important MCQs - [April 2024]

1. What is 20% of 150?

A) 30
B) 25
C) 20
D) 15

Show Answer

A) 30
Explanation: 20% of 150 is calculated as (20/100) * 150 = 30.

2. If 40% of a number is 120, what is 30% of that number?

A) 100
B) 90
C) 80
D) 70

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B) 90
Explanation: First, find the number: 40% of number = 120, so the number = 120 / (40/100) = 300. Then, 30% of 300 = (30/100) * 300 = 90.

3. A shirt was discounted by 25% and sold for ₹600. What was the original price?

A) ₹750
B) ₹800
C) ₹850
D) ₹900

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B) ₹800
Explanation: If the sale price is ₹600 after a 25% discount, the original price was ₹600 / (1 – 0.25) = ₹800.

4. What percentage of 50 is 12.5?

A) 25%
B) 20%
C) 15%
D) 10%

Show Answer

A) 25%
Explanation: (12.5 / 50) * 100 = 25%.

5. If 5% more is gained by selling an article for ₹1050, what is the original selling price?

A) ₹1000
B) ₹950
C) ₹900
D) ₹850

Show Answer

A) ₹1000
Explanation: Let the original selling price be x. 5% of x = 1050 – x. Therefore, x = 1050 / 1.05 = ₹1000.

6. A population of a town is 50,000. It increases by 10% in the first year and by another 20% in the second year. What is the population at the end of two years?

A) 66,000
B) 60,000
C) 72,000
D) 70,000

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A) 66,000
Explanation: After the first year: 50,000 + 10% of 50,000 = 55,000. After the second year: 55,000 + 20% of 55,000 = 66,000.

7. If an article costs ₹650 after a 35% discount, what is its original price?

A) ₹850
B) ₹900
C) ₹1000
D) ₹750

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C) ₹1000
Explanation: Original price = 650 / (1 – 0.35) = ₹1000.

8. A student scored 75% marks in an exam. If the total marks were 800, how many marks did the student lose?

A) 200
B) 150
C) 100
D) 250

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A) 200
Explanation: Marks obtained = 75% of 800 = 600. Marks lost = 800 – 600 = 200.

9. A fruit seller had 120 apples. He sold 30% of them on the first day. How many apples are left?

A) 84
B) 90
C) 80
D) 96

Show Answer

A) 84
Explanation: Apples sold = 30% of 120 = 36. Apples left = 120 – 36 = 84.

10. What is 25% of a quarter of 1600?

A) 100
B) 200
C) 400
D) 800

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A) 100
Explanation: A quarter of 1600 is 400, and 25% of 400 is 100.

11. A bag contains ₹840 in the form of ₹20 and ₹10 notes. If the total number of notes is 50, how many ₹20 notes are there?

A) 20
B) 30
C) 25
D) 35

Show Answer

B) 30
Explanation: Let the number of ₹20 notes be x and ₹10 notes be 50 – x. Then, 20x + 10(50 – x) = 840. Solving for x gives x = 30.

12. In an election between two candidates, one got 55% of the total valid votes. If the total votes were 8000, and 200 votes were invalid, how many votes did the other candidate get?

A) 3420
B) 3600
C) 3480
D) 3350

Show Answer

C) 3480
Explanation: Total valid votes = 8000 – 200 = 7800. Votes for the other candidate = 45% of 7800 = 3510.

13. A student has to obtain 35% of the total score to pass an exam. If he scored 175 marks and failed by 40 marks, what was the total score?

A) 600
B) 500
C) 400
D) 700

Show Answer

B) 500
Explanation: Marks needed to pass = 175 + 40 = 215. So, 215 is 35% of the total score. The total score = 215 / 0.35 = 500.

14. If the price of a book is increased by 25%, by what percent must a person decrease the quantity he buys so that the expenditure does not increase?

A) 20%
B) 25%
C) 30%
D) 15%

Show Answer

A) 20%
Explanation: Let the original price be ₹100, then the new price is ₹125. To maintain the same expenditure, the new quantity should be 100/125 of the original, which is a 20% decrease.

15. A rectangle's length is increased by 20% and its width is decreased by 20%. What is the percentage change in the area?

A) No change
B) 4% increase
C) 4% decrease
D) 2% decrease

Show Answer

C) 4% decrease
Explanation: Let original length = x and width = y. Original area = xy. New area = 1.2x * 0.8y = 0.96xy. Decrease = 4%.

16. A company reduced the prices of its TVs by 30%. By what percentage must the reduced price be increased to match the original price?

A) 42.86%
B) 30%
C) 33.33%
D) 50%

Show Answer

A) 42.86%
Explanation: Let the original price be ₹100, then the reduced price is ₹70. To go back to ₹100, the increase must be ₹30 on ₹70, which is 42.86%.

17. In a school, 75% of the teachers are female, and the number of male teachers is 8. How many teachers are there in total?

A) 32
B) 24
C) 30
D) 40

Show Answer

A) 32
Explanation: Male teachers represent 25% of the total, so 8 = 25% of total. Total teachers = 8 / 0.25 = 32.

18. If a person's salary is increased by 10% and then decreased by 10%, what is the net change in his salary?

A) No change
B) 1% decrease
C) 1% increase
D) 2% decrease

Show Answer

B) 1% decrease
Explanation: Let the original salary be ₹100. After increase, it’s ₹110. After decrease, it’s 0.9 * 110 = ₹99. So, there’s a 1% decrease.

19. The price of petrol increases by 25%. If the expenditure on petrol has to remain the same, by what percentage must a person reduce his consumption?

A) 20%
B) 25%
C) 30%
D) 15%

Show Answer

A) 20%
Explanation: To keep expenditure the same, consumption must be reduced to 80% of original (1/(1+0.25) = 0.8 or 80%).

20. A person marks his goods up by 40% and then offers a discount of 10%. What is his profit percentage?

A) 26%
B) 28%
C) 30%
D) 32%

Show Answer

B) 28%
Explanation: Let the cost price be ₹100. Marked price = ₹140. After discount, selling price = ₹140 * 0.9 = ₹126. Profit = ₹26 on ₹100, so 26%.

21. What is 150% of 40?

A) 60
B) 90
C) 60
D) 100

Show Answer

A) 60
Explanation: 150% of 40 = (150/100) * 40 = 60.

22. If the price of a commodity decreases by 20%, by what percentage must the new price be increased to return to its original price?

A) 20%
B) 25%
C) 15%
D) 30%

Show Answer

B) 25%
Explanation: Let the original price be ₹100. After a 20% decrease, the new price is ₹80. To return to ₹100, the increase must be ₹20 on ₹80, which is 25%.

23. A man's salary is reduced by 10%. What percentage of the reduced salary must be added to it to get back to his original salary?

A) 11.11%
B) 10%
C) 9%
D) 12%

Show Answer

A) 11.11%
Explanation: If the original salary is ₹100, after a 10% reduction, it becomes ₹90. To get back to ₹100, an addition of ₹10 on ₹90 is needed, which is 11.11%.

24. In an examination, 35% of the students passed and 455 students failed. How many students appeared for the examination?

A) 700
B) 650
C) 600
D) 550

Show Answer

A) 700
Explanation: Let the total number of students be x. Then, 65% of x = 455 (since 35% passed, 65% failed). Solving for x gives x = 700.

25. If 60% of a number is equal to three-fourths of another number, what is the ratio of the first number to the second number?

A) 5:4
B) 4:5
C) 3:4
D) 4:3

Show Answer

B) 4:5
Explanation: Let the numbers be x and y. Then, 60% of x = 3/4 of y, or (60/100)x = (3/4)y. Simplifying, we get x/y = 4/5.

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