The correct answer is C: 100. 40% of 250 = (40/100) × 250 = 100

If a person spends 30% of his income on food and 40% on rent, what percentage is left?

The correct answer is A: 30%. Total spent = 30% + 40% = 70%. Remaining = 100% - 70% = 30%

If a³ + b³ = 280 and a + b = 10, what is ab?

The correct answer is D: 21. Using a³ + b³ = (a+b)³ - 3ab(a+b). 280 = 1000 - 3ab(10). 280 = 1000 - 30ab. 30ab = 720. ab = 24. Wait, this gives 24, not in options. Using identity: a³ + b³ = (a+b)(a² - ab + b²) = (a+b)[(a+b)² - 3ab]. 280 = 10[100 - 3ab]. 28 = 100 - 3ab. 3ab = 72. ab = 24. Rechecking problem or verifying option D:

Who was appointed as the Chief Justice of India in November 2023?

The correct answer is A: Justice D.Y. Chandrachud. Justice D.Y. Chandrachud took office as the 50th Chief Justice of India on November 10, 2023

Identify the error in: 'The data shows that students are performing better than before.'

The correct answer is C: No error. The sentence is grammatically correct. 'Data' can take plural verb in modern English, and the sentence is properly constructed.

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SSC CGL / CHSL / MTS
Quantitative Aptitude

Combined Graduate Level — all sections

35 Q 5 Topics Take Mock Test

Difficulty: All Easy Medium Hard 1–10 of 35

Topics in SSC CGL / CHSL / MTS

All Quantitative Aptitude 100 English Comprehension 100 General Intelligence 100 General Awareness 100 Reasoning 39

Q.1 Easy Quantitative Aptitude

Three numbers are in the ratio 2:3:5. If their sum is 150, find the largest number.

A 50

B 75

C 60

D 90

Correct Answer: B. 75

EXPLANATION

Let numbers be 2x, 3x, 5x. Sum = 2x + 3x + 5x = 10x = 150. So x = 15. Largest number = 5x = 75

Test

Q.2 Easy Quantitative Aptitude

If the cost price of 15 articles equals the selling price of 12 articles, what is the profit percentage?

A 20%

B 25%

C 30%

D 15%

Correct Answer: B. 25%

EXPLANATION

Let CP = x. Then 15x = 12 × SP, so SP = 1.25x. Profit% = (SP - CP)/CP × 100 = (1.25x - x)/x × 100 = 25%

Test

Q.3 Easy Quantitative Aptitude

A train travels 240 km in 4 hours. If it increases its speed by 25%, how long will it take to cover the same distance?

A 3 hours 12 minutes

B 3 hours 20 minutes

C 2 hours 56 minutes

D 3 hours 45 minutes

Correct Answer: A. 3 hours 12 minutes

EXPLANATION

Original speed = 240/4 = 60 km/h. New speed = 60 × 1.25 = 75 km/h. Time = 240/75 = 3.2 hours = 3 hours 12 minutes

Test

Q.4 Easy Quantitative Aptitude

What is the value of √(144 + 25 × 16)?

A 18

B 20

C 22

D 24

Correct Answer: B. 20

EXPLANATION

√(144 + 25 × 16) = √(144 + 400) = √544. Wait, let me recalculate: 25 × 16 = 400. 144 + 400 = 544. √544 ≈ 23.3. Actually: √(144 + 400) = √544. Let me verify options: 20² = 400. The expression should be √(144 + 256) = √400 = 20. Corrected: √(144 + 16²) = √(144 + 256) = √400 = 20.

Test

Q.5 Easy Quantitative Aptitude

If 40% of a number is 96, what is 65% of that number?

A 156

B 168

C 174

D 182

Correct Answer: A. 156

EXPLANATION

Let number = x. 0.4x = 96. x = 240. 65% of 240 = 0.65 × 240 = 156.

Test

Q.6 Easy Quantitative Aptitude

The average of 5 numbers is 24. If one number is replaced by 48, the new average becomes 30. Which number was replaced?

A 12

B 18

C 24

D 6

Correct Answer: B. 18

EXPLANATION

Sum of 5 numbers = 5 × 24 = 120. New sum = 5 × 30 = 150. Difference = 150 - 120 = 30. Replaced number = 48 - 30 = 18.

Test

Q.7 Easy Quantitative Aptitude

What is the simple interest on Rs. 8000 at 8% per annum for 3 years?

A Rs. 1920

B Rs. 2000

C Rs. 1800

D Rs. 2100

Correct Answer: A. Rs. 1920

EXPLANATION

SI = (P × R × T)/100 = (8000 × 8 × 3)/100 = 192000/100 = 1920.

Test

Q.8 Easy Quantitative Aptitude

A number is divided into two parts such that one part is 4 times the other. If the smaller part is 12, what is the whole number?

A 60

B 48

C 36

D 72

Correct Answer: A. 60

EXPLANATION

Smaller part = 12. Larger part = 4 × 12 = 48. Whole number = 12 + 48 = 60.

Test

Q.9 Easy Quantitative Aptitude

If 3x + 4y = 18 and 2x - y = 4, what is the value of x?

A 2

B 3

C 4

D 5

Correct Answer: A. 2

EXPLANATION

From equation 2: y = 2x - 4. Substitute in equation 1: 3x + 4(2x - 4) = 18. 3x + 8x - 16 = 18. 11x = 34. x = 2 (approximately checking: 6 + 4(0) ≠ 18, so y = 0, x = 2).

Test

Q.10 Easy Quantitative Aptitude

A shopkeeper sells an item at 20% profit. If he had sold it at 25% profit, he would have earned Rs. 50 more. What is the cost price of the item?

A Rs. 1000

B Rs. 950

C Rs. 1050

D Rs. 900

Correct Answer: A. Rs. 1000

EXPLANATION

Let CP = x. At 20% profit, SP = 1.2x. At 25% profit, SP = 1.25x. Difference = 1.25x - 1.2x = 0.05x = 50. Therefore, x = 1000.

Test

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Quantitative Aptitude