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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

If the cost price of 12 pens is equal to the selling price of 8 pens, the gain percent is ?

A) 12% B) 30%
C) 50% D) 60%
 
Answer & Explanation Answer: C) 50%

Explanation:

Friends, we know we will need gain amount to get gain percent, right. So lets get gain first.

Let the cost price of 1 pen is Re 1

Cost of 8 pens = Rs 8

Selling price of 8 pens = 12

Gain = 12 - 8 = 4

Gain% = gaincost×100%  = 48×100% = 50%

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Filed Under: Profit and Loss

348 71119
Q:

A mixture contains alcohol and water in the ratio 4 : 3. If 5 liters of water is added to the mixture, the ratio becomes 4: 5. Find the quantity of alcohol in the given mixture.

A) 10 B) 12
C) 15 D) 18
 
Answer & Explanation Answer: A) 10

Explanation:

Let the quantity of alcohol and water be 4x litres and 3x litres respectively

 

4x/(3x+5) = 4/5 

 

20x = 4(3x+5)

 

8x = 20

 

x = 2.5

 

Quantity of alcohol = (4 x 2.5) litres = 10 litres.

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Filed Under: Ratios and Proportions

347 70947
Q:

Read the data given below and answer the questions based on it.

 

In the CBSE Board exams last year, 53% passed in Biology, 61% percent passed in English, 60% in Social studies, 24% in Biology and English, 35% in English and social studies, 27% in Biology and social studies and 5% in none.

 

What is the percentage of students who passed in all subjects?

A) 8 B) 12
C) 7 D) 10
 
Answer & Explanation Answer: C) 7

Explanation:
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Filed Under: Percentage
Exam Prep: Bank Exams

5 70944
Q:

What should come in place of question mark (?) in the following number series?

38, 195, ?, 4905, 24530, 122655

A) 980 B) 885
C) 824 D) 1021
 
Answer & Explanation Answer: A) 980

Explanation:

The given series follows the pattern that,

 

×5+5,   ×5+5,   ×5+5,   ×5+5,   ×5+5

 

38 x 5 + 5  = 195

 

195 x 5 + 5 = 980

 

980 x 5 + 5 = 4905

 

4905 x 5 + 5 = 24530

 

24530 x 5 + 5 = 122655

 

So the missing number is 980 .

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Filed Under: Odd Man Out
Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk

7 70784
Q:

Find the Odd One Out of the following Number Series?

3, 14, 36, 67, 113, 168

A) 14 B) 36
C) 67 D) 113
 
Answer & Explanation Answer: C) 67

Explanation:

Here the given number series is 3, 14, 36, 67, 113, 168

It follows a pattern that

3

3 + 1 x 11 = 3 + 11 = 14

14 + 2 x 11 = 14 + 22 = 36

36 + 3 x 11 = 36 + 33 = 69

69 + 4 x 11 = 69 + 44 = 113

113 + 5 x 11 = 113 + 55 = 168

 

Hence, the wrong number is 67.

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Filed Under: Odd Man Out
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE , TOEFL
Job Role: Analyst , Bank Clerk , Bank PO

6 70769
Q:

Solve the following : 80÷[48−56−(60−36÷12×4)]=?

 

A) 5 B) 8
C) 4 D) 2
 
Answer & Explanation Answer: D) 2

Explanation:
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Filed Under: Simplification

2 70636
Q:

Solve the following :

38 - (60 ÷ 5 x 16 - 8 ÷ 2 ÷ 3) =?

 

A) 22 B) 29
C) 30 D) 37
 
Answer & Explanation Answer: A) 22

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

2 70601
Q:

 Find the Odd One Out?

3, 4, 14, 48, 576, 27648

A) 4 B) 14
C) 48 D) 27648
 
Answer & Explanation Answer: B) 14

Explanation:

Given Number series is :

 

3   4   14   48   576   27648

 

It follows a pattern that,

 

3

 

4

 

4 x 3 = 12   but not 14

 

12 x 4 = 48

 

48 x 12 = 576

 

576 x 48 = 27648

 

 

 

Hence, the odd one in the given Number Series is 14.

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Filed Under: Odd Man Out
Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk , Analyst

4 70593