Aptitude and Reasoning Questions

Q:

A class consists of both boys and girls along with a teacher. After a class, the teacher drinks 9 litres of water, a boy drinks 7 litres of water and a girl drinks 4 litres of water. If after a class 42 litres of water was consumed, find the number of girls in the class ?

A) 8 B) 6
C) 5 D) 3
 
Answer & Explanation Answer: D) 3

Explanation:

Given teacher drinks 9 ltr
Let number of boys be 'A'.
Let number of girls be 'B'.
Boy drinks 7 ltr and girl drinks 4 ltr
After class total water consumed = 42 ltr
Then,
9 + 7A + 4B = 42
=> 7A + 4B = 33
By trial and error method,
The only integers which satisfy the equation is A = 3 and B = 3
Therefore, number of girls in the class = 3.

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Filed Under: Simplification
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Q:

The difference between the interests earned when Rs. P is invested for four years in a scheme offering 9% p.a. Simple interest and when the same sum (Rs P) is invested for two years in another scheme offering 12% p.a. simple interest, is Rs 480. What is the value of P?

A) 2000 B) 3500
C) 2500 D) 4000
 
Answer & Explanation Answer: D) 4000

Explanation:

p=(p*4*9)/100-(p*2*12)/100 = 480

=12p/100=480

p=4000

 

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Filed Under: Simple Interest

1 4758
Q:

If the gifts are passed on, the whole purpose of the gift is defeated. Therefore, the gift should be one that is useful and at the same time it attracts you, appeals to you and you retain it.

Conclusions : 

I. If gifts are retained , their utility increases.

II. Gifts are not meant for repeated change of hands.

A) If only conclusion I follows B) If only conclusion II follows
C) If neither I nor II follows D) If both I and II follow
 
Answer & Explanation Answer: B) If only conclusion II follows

Explanation:

I is not hinted at. It is an invention of the concluder's mind. II follows  because if "the whole purpose of something is defeated", it loses its meaning.

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Q:

Example:Given an amount needed(future value) of $3300 in 4 years at an interest rate of 11% compounded anually,Find the present value and the amount of interest earned

A) 1126.19 B) 1237
C) 2863 D) 1892
 
Answer & Explanation Answer: A) 1126.19

Explanation:

M=P(1+i)^n

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Filed Under: Compound Interest
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Q:

Consider the given argument and decide which of the given assumptions is (are) implicit.

 


Argument :

 

An army general said 'Shoot Now' to the soldier.

 

Assumptions :

 

1. The soldier knows where and what to shoot.

2. The army general doesn't know to shoot.

 

A) Only assumption 2 is implicit B) Both 1 and 2 are implicit
C) Neither 1 nor 2 is implicit D) Only assumption 1 is implicit
 
Answer & Explanation Answer: D) Only assumption 1 is implicit

Explanation:
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Filed Under: Statement and Assumptions
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Q:

Consider the given argument and decide which of the given assumptions is (are) implicit.


Argument :

 

Government had put advertisements and issued advisories to public not to eat food from the roadside, as they are unhygenic.

 

Assumptions :

 

1. Government wants to stop roadside vendors.

2. Government wants to increase the profit of hotel owners.

 

A) Neither 1 nor 2 is implicit B) Both 1 and 2 are implicit
C) Only assumption 1 is implicit D) Only assumption 2 is implicit
 
Answer & Explanation Answer: A) Neither 1 nor 2 is implicit

Explanation:
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Filed Under: Statement and Assumptions
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Q:

9 tens 10 ones equals

A) 910 B) 90
C) 91 D) 100
 
Answer & Explanation Answer: D) 100

Explanation:

9 tens 10 ones equals

=> 9 x 10 + 10 x 1

=> 90 + 10

=> 100.

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Filed Under: Arithmetical Reasoning
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Q:

Sharon Stone deposits $2000 at the end of each year in an account earning 10% compounded annually. Determine how much money she has after 25 years. How much interest did she earn?

A) 146694.12 B) 13452
C) 18232 D) 15627
 
Answer & Explanation Answer: A) 146694.12

Explanation:

S=R[(1+i)^n-1]/i

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Filed Under: Compound Interest
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