6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

The hypotenuse of a right-angled triangle 10 cm and its area is 24 cm^2. If the shorts side is halved and the longer side is double, the new hypotenuse becomes

A) √245 cm	B) √255 cm
C) √265 cm	D) √275 cm

Answer & Explanation Answer: C) √265 cm

Explanation:

Hypotenuse = 10cm

Let the other 2 perpendicular sides be a and b

Area ½ a*b = 24

So a*b = 48 cm^2

Also using Pythagoras

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Filed Under: Area
Exam Prep: Bank Exams

5 2071

Q:

Each question contains Quantity I and Quantity II. Read the contents carefully and answer your questions accordingly.

Quantity I: there are three numbers in the ratio 5:6:10. The sum of the largest and the smallest numbers is 126 more than the other number. Find the largest number?

Quantity II: 12% of first number is equal to 25 % second number. The difference of these two numbers is 78. Then find the largest number?

A) Quantity I > Quantity I	B) Quantity I ≥ Quantity II
C) Quantity I < Quantity II	D) Quantity I < Quantity II

Answer & Explanation Answer: C) Quantity I < Quantity II

Explanation:

Quantity I= Let the three numbers will be 5x, 6x and 10x respectively

ATQ

10x+5x−6x=126

9x=126 X=14

So largest number =10x=10×14=140

Quantity II=let x and y are two numbers

ATQ

12% of x=25%of y And their difference is 78

So first no.=150 2nd no.=72

Hence Quantity I < Quantity II

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Filed Under: Ratios and Proportions

0 2071

Q:

What is the value of $\sqrt{473 + \sqrt{529} + \sqrt{256} + \sqrt{289}}$ ?

A) 27	B) 23
C) 19	D) 39

Answer & Explanation Answer: B) 23

Explanation:

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Filed Under: Square Roots and Cube Roots
Exam Prep: Bank Exams

3 2070

Q:

A shopkeeper earns a profit of 15% after selling a book at 20% discount on the printed price . The ratio of the cost price and printed price of the book is

A) 20:23	B) 23:20
C) 16:23	D) 23:16

Answer & Explanation Answer: C) 16:23

Explanation:

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

5 2069

Q:

If pq(p+q) = 1, then the value of $\frac{1}{p^{3} q^{3}} - p^{3} - q^{3}$ is equal to

A) 1	B) 2
C) 3	D) 4

Answer & Explanation Answer: C) 3

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

0 2069

Q:

A can do a certain job in 12 days. B is 60% more efficient than A. Then B can do the same piece of work in

A) 8 days	B) 7.5 days
C) 6.4 days	D) 5.5 days

Answer & Explanation Answer: B) 7.5 days

Explanation:

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Filed Under: Time and Work
Exam Prep: Bank Exams

3 2068

Q:

3/5 as a decimal fraction?

A) 0.25	B) 0.45
C) 0.60	D) 0.75

Answer & Explanation Answer: C) 0.60

Explanation:

Given fraction is 3/5

Now, multiply with 2 for numerator and denominator

we get,

3/5 x 2/2 = 6/10

When we divide, 6 with 10, we get 0.6 as quotient.

Hence, 3/5 as a decimal fraction is 0.6.

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Filed Under: Decimal Fractions
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

3 2068

Q:

On a machine there is 10% trade discount on the marked price of Rs 2,50,000. But the machine is sold at Rs 2,16,000 after giving a cash discount. How much is this cash discount (in %)?

A) 5	B) 4
C) 6	D) 7

Quantitative Aptitude - Arithmetic Ability Questions

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