Aptitude and Reasoning Questions

Q:

A, B and C can do a piece of work in 24 days, 30 days and 40 days respectively. They began the work together but C left 4 days before the completion of the work. In how many days was the work completed?

A) 11 days B) 12 days
C) 13 days D) 14 days
 
Answer & Explanation Answer: A) 11 days

Explanation:

One day's work of A, B and C = (1/24 + 1/30 + 1/40) = 1/10.

C leaves 4 days before completion of the work, which means only A and B work during the last 4 days.

Work done by A and B together in the last 4 days = 4 (1/24 + 1/30) = 3/10.

Remaining Work = 7/10, which was done by A,B and C in the initial number of days. 

Number of days required for this initial work = 7 days. 

Thus, the total numbers of days required = 4 + 7 = 11 days.

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Filed Under: Time and Work

528 144219
Q:

In the following question, select the missing number from the given series.

 

5, 9, 13, 17, 21, ?

 

A) 32 B) 26
C) 25 D) 29
 
Answer & Explanation Answer: C) 25

Explanation:
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Filed Under: Number Series
Exam Prep: Bank Exams
Job Role: Bank Clerk , Bank PO

46 142616
Q:

If selling price is doubled, the profit triples. Find the profit percent ?

A) 100% B) 200%
C) 300% D) 400%
 
Answer & Explanation Answer: A) 100%

Explanation:

Let the C.P be Rs.100 and S.P be Rs.x, Then
The profit is (x-100)
Now the S.P is doubled, then the new S.P is 2x
New profit is (2x-100)
Now as per the given condition;
=> 3(x-100) = 2x-100
By solving, we get
x = 200
Then the Profit percent = (200-100)/100 = 100
Hence the profit percentage is 100%

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Filed Under: Profit and Loss
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
Job Role: Bank Clerk , Bank PO

735 142456
Q:

10 25 45 54 60 75 85

Find the Odd Number?

A) 54 B) 10
C) 45 D) 85
 
Answer & Explanation Answer: A) 54

Explanation:

In given Series, all the numbers except 54 are multiples of 5.

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

24 141975
Q:

What will come in place of the question mark (?) in the following question ?

52.5% of 800 + 30.5% of 2800 = ? + 87.30

A) 1096.30 B) 1226.70
C) 1124.20 D) 1186.70
 
Answer & Explanation Answer: D) 1186.70

Explanation:

52.5% of 800 + 30.5% of 2800 = ? + 87.30

420 + 854 - 87.30 = ?

1274 - 87.30 = ?

? = 1186.70

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Filed Under: Percentage
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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18 140662
Q:

If each side of a square is increased by 25%, find the percentage change in its area?

A) 65.25 B) 56.25
C) 65 D) 56
 
Answer & Explanation Answer: B) 56.25

Explanation:

let each side of the square be a , then area = a2 

As given that The side is increased by 25%, then 

New side = 125a/100 = 5a/4 

 

New area = 5a42  

 

Increased area= 25a216-a2 

 

Increase %=9a2/16a2*100  % = 56.25%

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Filed Under: Area
Exam Prep: Bank Exams
Job Role: Bank PO

949 140189
Q:

In the following question, select the related number from the given alternatives.

50 : 65 : : 122 : ?

 

 

 

A) 157 B) 145
C) 147 D) 155
 
Answer & Explanation Answer: B) 145

Explanation:
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Filed Under: Analogy
Exam Prep: Bank Exams

11 138110
Q:

Choose a similar word ?

Kolkata, Mumbai, Mangalore

A) Hyderabad B) Delhi
C) Cochin D) Jaipur
 
Answer & Explanation Answer: C) Cochin

Explanation:

All cities belong to port cities of India.

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Filed Under: Analogy
Exam Prep: Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

42 138105