6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

39 is 5.2% of?

A) 75	B) 750
C) 1500	D) 1875

Answer & Explanation Answer: B) 750

Explanation:

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Filed Under: Percentage
Exam Prep: Bank Exams

2 1897

Q:

To cover a distance of 252 km in 2.5 hours what should be the average speed of the car in meters/second?

A) 100.8 m/s	B) 50.4 m/s
C) 28 m/s	D) 56 m/s

Answer & Explanation Answer: C) 28 m/s

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Filed Under: Time and Distance
Exam Prep: Bank Exams

1 1897

Q:

In the given figure, $∠$ QRN = 40 $°$ , $∠$ PQR = 46 $°$ and MN is a tangent at R. What is the value (in deg) of x, y and z respectively?

A) 40, 46, 94	B) 40, 50, 90
C) 46, 54, 80	D) 50, 40, 90

Answer & Explanation Answer: A) 40, 46, 94

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams , GATE

0 1897

Q:

The average (arithmetic mean) amount of savings of ten students is Rs. 600. Three of the students have no savings at all and each of the others have at least Rs. 250 including Nihar, who has exactly Rs. 1300. The largest amount, in Rs., that any one student could have is

A) 3250	B) 3450
C) 3650	D) 3850

Answer & Explanation Answer: B) 3450

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Filed Under: Average
Exam Prep: Bank Exams

1 1897

Q:

The average age of 80 boys in a class is 15 years. The average age of a group of 15 boys in the class is 16 years and the average age of another 25 boys in the class is 14 years. What is the average age of the remaining boys in the class?

A) 15.25 years	B) 14 years
C) 14.75 years	D) Cannot be determined

Answer & Explanation Answer: A) 15.25 years

Explanation:

Total sum of age of 80 students of the class = 15 X 80 = 1200 years
15 students → 15 X 16 = 240 years
25 students → 25 X 14 = 350 years
Sum of 40 students = 590 years
Total age of remaining 40 students = 1200 – 590 = 610
So, average age = 15.25 years

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Filed Under: Average
Exam Prep: Bank Exams

0 1896

Q:

In a mixture, unbroken and broken rice grains are in the ratio 3 : 2. How much fraction of the mixture must be drawn off and substituted with broken grains, so that the ratio of unbroken and broken grains becomes 1 : 1?

A) 1/3	B) 1/6
C) 1/4	D) 2/5

Answer & Explanation Answer: B) 1/6

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Filed Under: Alligation or Mixture
Exam Prep: Bank Exams

4 1896

Q:

What is the value of 10% of 150% of 400?

A) 600	B) 50
C) 500	D) 60

Answer & Explanation Answer: D) 60

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Filed Under: Percentage
Exam Prep: Bank Exams

4 1896

Q:

If x = √2+1, then the value of $x^{4} - 1 / x^{4}$

A) 8√2	B) 18√2
C) 6√2	D) 24√2

Quantitative Aptitude - Arithmetic Ability Questions

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