6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

10 is added to a certain number, the sum is multiplied by 7, the product is divided by 5 and 5 is subtracted from the quotient. The remainder left is half of 88. What is the number?

A) 21	B) 20
C) 25	D) 30

Answer & Explanation Answer: C) 25

Explanation:

Let the number be x

When 10 is added, number = x + 10

When 7 is multiplied, number = 7 X (x + 10)

According to question,

⇒[7 X (x+10) / 5] –5 = 44

⇒7x + 70 = 49 X 5

⇒x + 10 = 35,

⇒x = 25

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Filed Under: Numbers
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Q:

In the following question, select the odd number pair from the given alternatives.

A) 1444 – 37	B) 2809 – 54
C) 2209 – 46	D) 6084 – 77

Answer & Explanation Answer: B) 2809 – 54

Explanation:

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Filed Under: Odd Man Out
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Q:

If ${(\sqrt{3} + 1)}^{2} = x + \sqrt{3 y},$ then the x+y is

A) 2	B) 4
C) 6	D) 8

Answer & Explanation Answer: C) 6

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

If ${(x - 5)}^{2} + {(y - 2)}^{2} + {(z - 9)}^{2} = 0$ , then value of (x + y - z) is

A) 16	B) -1
C) -2	D) 12

Answer & Explanation Answer: C) -2

Explanation:

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Exam Prep: Bank Exams

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Q:

If 3√2 + √18 + √50 = 15.55, then what is the value of √32 + √72?

A) 13.22	B) 10.83
C) 14.13	D) 16.54

Answer & Explanation Answer: C) 14.13

Explanation:

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Q:

If a sum of money doubles itself in 8 yrs, then the interest rate in percentage is ?

A) 8 1⁄2%	B) 10%
C) 10 1⁄2 %	D) 12 1⁄2 %

Answer & Explanation Answer: D) 12 1⁄2 %

Explanation:

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Filed Under: Simple Interest
Exam Prep: Bank Exams

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Q:

In each of these questions, a question is given followed by information in three statements. You have to find out the data in which statement(s) is sufficient to answer the question and mark your answer accordingly. What are the marks scored by Abhijit in English?

I. Marks scored by Abhijit in Maths are more than his marks in Science by 20.

II. Total marks scored by Abhijit in Maths, Science and English are 198.

III. Marks scored by Abhijit in Science are more than his marks in English by 12.

A) Any two of the three	B) Only II and III
C) All I, II and III	D) Question cannot be answered even with the information in all the three statements

Answer & Explanation Answer: C) All I, II and III

Explanation:

Suppose marked scored by Abhijit in English = x
From statement I,
Marks in science = x + 12
From statement III,
Marks in mathematics = x + 12 + 20
= x + 32
From statement II,
English + Science + Mathematics = 198
x + x +12 + x + 38 = 198
3x = 154
x = 154/3
All I, II and III are required to find answer.

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

X and Y started a business by investing Rs 171000 and Rs 243000 respectively. If X’s share in the profit earned at the end of year is Rs 3800, then what will be the total profit (in Rs) earned by them together?

A) 9200	B) 9600
C) 8400	D) 8800

Quantitative Aptitude - Arithmetic Ability Questions

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