Aptitude and Reasoning Questions

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) 8 Liters B) 10 Liters
C) 18 Liters D) 22 Liters
 
Answer & Explanation Answer: B) 10 Liters

Explanation:

Let the quantity of alcohol and water be 4x liters and 3x liters respectively. Then,

 

(4x)/(3x+5) = 4/5

 

=> 20x = 4(3x+5) 

 

=> x = 2.5 

 

Quantity of alcohol = (4 * 2.5) liters = 10 liters.

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Filed Under: Ratios and Proportions

12 9044
Q:

 

Based on the given data, the total percentage of literates in the four cities together, round to one decimal, is

 

A) 55 B) 55.7
C) 55.9 D) 55.8
 
Answer & Explanation Answer: D) 55.8

Explanation:
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Filed Under: Table Charts
Exam Prep: Bank Exams

0 9039
Q:

There are 10 Letters and 10 correspondingly 10 different Address. If the letter are put into envelope randomly, then find the Probability that Exactly 9 letters will at the Correct Address ?

A) 1/10 B) 1/9
C) 1 D) 0
 
Answer & Explanation Answer: D) 0

Explanation:

As we know we have 10 letter and 10 different address and one more information given that exactly 9 letter will at the correct address....so the remaining one letter automatically reach to their correct address
P(E) = favorable outcomes /total outcomes
Here favorable outcomes are '0'.
So probability is '0'.

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Filed Under: Probability
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Bank Clerk , Bank PO

5 9033
Q:

Which of the following diagrams indicates the best relation between Doctors, Teachers and Engineers?

A) A B) B
C) C D) D
 
Answer & Explanation Answer: B) B

Explanation:

Some teachers can be Doctor and can be Engineer. But there is no common in between Doctor and Engineer. So, option B suits best in which the middle circle denotes teachers.

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Filed Under: Logical Venn Diagram

25 9022
Q:

A man said to his son, "I was two-thirds of your present age when you were born". IIf the present age of the man is 48 years, find the present age of the son.

Answer

Let the Present age of the son be P, which means he was born P years ago.At the time the son was born, the age of the man was : (48 - P). So, according to the statement made by the man, his age when the son was born should be equal to 2/3 of P.


Therefore, 


Solving, we get P = 28.8 years; which is the present age of the son.

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Subject: Problems on Ages

10 9017
Q:

(0.2 * 0.2 + 0.01) ( 0.1 * 0.1 + 0.02)^(-1) is equal to :

A) 5/3 B) 9/3
C) 11/3 D) 13/3
 
Answer & Explanation Answer: A) 5/3

Explanation:

Given = (0.2 * 0.2 + 0.01) / ( 0.1 * 0.1 + 0.02) = (0.04 + 0.01) / (0.01 + 0.02) = 0.05 / 0.03 = 5/3...

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Filed Under: Decimal Fractions

12 9010
Q:

Two pipes A and B can fill a tank in 16 hrs and 12 hrs respectively. The capacity of the tank is 240 liters. Both the pipes are opened simultaneously and closed after 2 hrs. How much more water need to fill the tank?

A) 70 lit B) 170 lit
C) 90 lit D) 190 lit
 
Answer & Explanation Answer: B) 170 lit

Explanation:

Given A alone can fill the tank of capacity 240 lit in 16 hrs.

=> A can fill in 1 hr = 240/16 = 15 lit

=> B alone can fill the tank of capacity 240 lit in 12 hrs.

=> B can fill in 1 hr = 240/12 = 20 lit

Now, (A + B) in 1 hr = 15 + 20 = 35 lit

But they are opened for 2 hrs

=> 2 x 35 = 70 lit rae filled

Remaining water to be filled in tank of 240 lit = 240 - 70 = 170 lit.

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Filed Under: Pipes and Cistern
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Bank Clerk , Bank PO

20 9009
Q:

If the first and second digits are interchanged in each number from the following set of numbers, and then the numbers are arranged in descending order, which number will be second ?

376  438  476  389  567

A) 376 B) 567
C) 389 D) 476
 
Answer & Explanation Answer: D) 476

Explanation:

Given 376  438  476  389  567 

 

After interchanging 1st and 2nd digits

 

736  348  746  839  657  

 

Now, arranging in descending order 839  746  736  657  348 

 

Here in second place 746

 

Therefore, 476 is the answer.

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Filed Under: Logical Sequence of Words
Exam Prep: Bank Exams
Job Role: Bank Clerk

20 9007