6500+ Quantitative Aptitude Questions and Answers With Explanation

Q:

[15% of 300% of 560] × 2 ÷ 5 =

A) 100	B) 90
C) 85	D) 105

Answer & Explanation Answer: A) 100

Explanation:

[15% of 300% of 560] × 2 ÷ 5

= (15 x 300 x 560 x 2)/100 x 100 x 5

~= 100

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Filed Under: Simplification
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Analyst , Bank Clerk , Bank PO

4 3123

Q:

A man buys a trouser in Rs.1250. By reduction of 20% in the price of trouser, he can purchase a t-shirt also in the same amount that was initially paid for the trouser. Find the price of the t-shirt?

A) Rs. 250	B) Rs. 125
C) Rs. 225	D) Rs. 200

Answer & Explanation Answer: A) Rs. 250

Explanation:

Initial amount spent on trouser by the man = Rs. 1250

Now, by the reduction of 20% in 1250, he can buy t-shirt too.

=> t-shirt cost = 20% of 1250 = 20 x 1250/100 = 250

Therefore, the price of the t-shirt = Rs. 250.

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Filed Under: Profit and Loss
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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7 3122

Q:

In an army selection process, the ratio of selected to unselected candidates was 6:1. If 30 less had applied and 10 less selected, the ratio of selected to unselected would have been 7:1. How many candidates had applied for the process?

A) 910	B) 1820
C) 455	D) 2730

Answer & Explanation Answer: A) 910

Explanation:

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Filed Under: Ratios and Proportions
Exam Prep: AIEEE , Bank Exams , CAT

6 3119

Q:

(3x + 2) (2x - 5) = ax² + kx + n. What is the value of a - n + k ?

A) 4	B) 1
C) 5	D) 3

Answer & Explanation Answer: C) 5

Explanation:

(3x + 2) (2x - 5) = $a x^{2} + k x + n$ ...............(1)

But (3x + 2)(2x - 5) = $6 x^{2} - 11 x - 10$ ........(2)

so by comparing (1) & (2),

we get a= 6, k= -11 , n= -10

(a - n + k) = 6 + 10 - 11 = 5.

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

4 3118

Q:

Two number P & Q are 20 % and 28 % less then a number X. What is the percentage the number Q is smaller then the number P?

A) 10%	B) 23%
C) 12%	D) 13%

Answer & Explanation Answer: A) 10%

Explanation:

Let the number X is 100

Then, PÃ 80 QÃ 72

So, Percentage decrease from P to Q is Ã 8/80=0.1-100=10%

1 is the right choice.

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Filed Under: Percentage

1 3114

Q:

How many digits will be there to the right of the decimal point in the product of 85.44 and .08455 ?

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

Answer & Explanation Answer: D) 6

Explanation:

Sum of decimal places = 7.

Since the last digit to the extreme right will be zero (since 4 x 5 = 20), so there will be 6 significant digits to the right of the decimal point.

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Filed Under: Numbers
Exam Prep: AIEEE , Bank Exams
Job Role: Bank Clerk

6 3113

Q:

A man's annual income has increased by Rs 1.2 lakhs but the tax on income that he has to pay has reduced from 12% to 10%. He now pays the same amount of tax as before. What is his increased income (in Rs lakhs)?

A) 8.4	B) 7.2
C) 9.6	D) 6

Answer & Explanation Answer: B) 7.2

Explanation:

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Filed Under: Percentage
Exam Prep: Bank Exams

9 3111

Q:

40% are the passing marks. A student gets 250 marks yet fails by 38 marks. What is the maximum marks?

A) 720	B) 750
C) 800	D) 840

Quantitative Aptitude - Arithmetic Ability Questions

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