Aptitude and Reasoning Questions

Q:

In three coloured boxes - Red, Green and Blue, 108 balls are placed. There are twice as many balls in the green and red boxes combined as there are in the blue box and twice as many in the blue box as there are in the red box. How many balls are there in the green box ?

A) 18 B) 36
C) 45 D) None of these
 
Answer & Explanation Answer: D) None of these

Explanation:

Let R, G and B represent the number of balls in red, green and blue boxes respectively.

 

Then, 

 

R + G + B = 108 ...(i),

 

G + R = 2B ...(ii)

 

B = 2R ...(iii)

 

From (ii) and (iii), we have G + R = 2x 2R = 4R or G = 3R.

 

Putting G = 3R and B = 2R in (i), we get:

 

R + 3R + 2R = 108 =>  6R = 108 => R = 18.

 

Therefore Number of balls in green box = G = 3R = (3 x 18) = 54.

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Filed Under: Arithmetical Reasoning

178 34241
Q:

A works twice as fast as B.If  B can complete a work in 18 days independently,the number of days  in which A and B can together finish the work is:

A) 4 days B) 6 days
C) 8 days D) 10 days
 
Answer & Explanation Answer: B) 6 days

Explanation:

Ratio of rates of working of A and B =2:1. So, ratio of times taken =1:2

Therefore, A's 1 day's work=1/9 

B's 1 day's work=1/18 

(A+B)'s 1 day's work= 1/9 + 1/18 = 1/6

so, A and B together can finish the work in 6 days

 

 

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Filed Under: Time and Work

101 34213
Q:

Select the related word/letters/number from the given alternatives.

18 : 30 : : 36 : ?

A) 78 B) 64
C) 66 D) 68
 
Answer & Explanation Answer: C) 66

Explanation:
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Filed Under: Analogy
Exam Prep: Bank Exams

0 34212
Q:

Select the related word/letters/number from the given alternatives.

 

Rajasthan: Jaipur: : Meghalaya : ?

 

A) Mizoram B) Shillong
C) Gangtok D) Shimla
 
Answer & Explanation Answer: B) Shillong

Explanation:
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Filed Under: Analogy
Exam Prep: Bank Exams

0 34188
Q:

Select the related word/letters/numbers from the given alternatives:

Cytology : Cells :: ? : Birds

A) Odontology B) Mycology
C) Etymology D) Ornithology
 
Answer & Explanation Answer: D) Ornithology

Explanation:
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Filed Under: Analogy
Exam Prep: Bank Exams

0 34169
Q:

A father left a will of Rs.35 lakhs between his two daughters aged 8.5 and 16 such that they may get equal amounts when each of them reach the age of 21 years. The original amount of Rs.35 lakhs has been instructed to be invested at 10% p.a. simple interest. How much did the elder daughter get at the time of the will?

A) 17.5 lakhs B) 21 lakhs
C) 15 lakhs D) 20 lakhs
 
Answer & Explanation Answer: B) 21 lakhs

Explanation:

Let Rs.x be the amount that the elder daughter got at the time of the will. Therefore, the younger daughter got (3,500,000 - x).

 

The elder daughter’s money earns interest for (21 - 16) = 5 years @ 10% p.a simple interest.

 

The younger daughter’s money earns interest for (21 - 8.5) = 12.5 years @ 10% p.a simple interest.

 

As the sum of money that each of the daughters get when they are 21 is the same,

 

 x+5*10*x100=3,500,000-x+12.5*10*3,500,000-x100

 

 x+50x=3,500,000-x+125100*3,500,000-125x100

 

 2x+50x100+125x100=3,500,000*1+54

 

 200x+50x+125x100=94*3,500,000

 

 =>x=2,100,000=21 lakhs

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Filed Under: Simple Interest
Exam Prep: GRE

57 34168
Q:

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

 

42, 21, 21, ?, 63, 157.5

 

A) 30.75 B) 32.5
C) 31.5 D) 33.75
 
Answer & Explanation Answer: C) 31.5

Explanation:
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Filed Under: Number Series
Exam Prep: Bank Exams

3 34151
Q:

In the following question, select the related word pair from the given alternatives.

 

Gold : Jewellery : : ? : ?

 

A) Pulp : Prism B) Jute : Furniture
C) Brick : Wall D) Seed : Book
 
Answer & Explanation Answer: B) Jute : Furniture

Explanation:
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Filed Under: Analogy
Exam Prep: Bank Exams

0 34140