Aptitude and Reasoning Questions

Q:

Four pipes P,Q, R and S can fill a cistern in 20,25, 40 and 50 hours respectively.The first pipe P was opened at 6:00 am, Q at 8:00 am, R at 9:00 am and S at 10:00 am. when will the Cistern be full?

A) 4:18 pm B) 3:09 pm
C) 12:15 pm D) 11:09 am
 
Answer & Explanation Answer: B) 3:09 pm

Explanation:

Efficiency of P= 100/20= 5% per hour  

Efficiency of Q= 100/25= 4% per hour  

Efficiency of R= 100/40= 2.5% per hour  

Efficiency of S=100/50= 2% per hour 

 

Cistern filled till 10 am by P, Q and R  

Till 10.00am Pipe P filled 20%Till 10.00am Pipe Q filled 8%Till 10.00am Pipe R filled 2.5%30.5%  

Thus, at 10 am pipe P,Q and R filled 30.5% of the cistern. 

Rest of cistern to be filled = 100 - 30.5 = 69.5%  

 

Now, the time taken by P,Q,R and S together to fill the remaining capacity of the cistern 

= 69.5 / (5+4+2.5+2) = 5 Hours and 9 minutes(approx).

Therefore, total time =4 hrs + 5hrs 9 mins = 9 hrs and 9 mins

 

It means cistern will be filled up at 3:09 pm

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Filed Under: Time and Work

21 18768
Q:

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

5, 8, 11, 14, 17, ?

 

A) 21 B) 19
C) 20 D) 23
 
Answer & Explanation Answer: C) 20

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

1 18764
Q:

Arrange the given words in the sequence in which they occur in the dictionary.

 

i. Cease
ii. Consecutive
iii. Constructive
iv. Cement

 

A) iii, i, iv, ii B)  i, iv, ii, iii
C) i, iv, iii, ii D) iv, i, ii, iii
 
Answer & Explanation Answer: B)  i, iv, ii, iii

Explanation:
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Filed Under: Logical Sequence of Words
Exam Prep: Bank Exams

1 18758
Q:

Arrange the given words in the sequence in which they occur in the dictionary.

i. Recognize
ii. Receptive
iii. Record
iv. Recur

A) ii, i, iii, iv B) iv, iii, ii, i
C) ii, i, iv, iii D) i, ii, iii, iv
 
Answer & Explanation Answer: A) ii, i, iii, iv

Explanation:
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Filed Under: Logical Sequence of Words
Exam Prep: Bank Exams

1 18749
Q:

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

 

2, 3, 4, 9, 16, 29, 54, ?

 

A) 109   B) 99  
C) 87   D) 117
 
Answer & Explanation Answer: B) 99  

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

9 18747
Q:

If u : v : w = 3 : 6 : 8, then what will be the ratio of (u/v) : (v/w) : (w/u)?

 

A) 8 : 6 : 3   B) 8 : 4 : 3  
C) 5 : 9 : 12   D) 6 : 9 : 32
 
Answer & Explanation Answer: D) 6 : 9 : 32

Explanation:
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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

5 18746
Q:

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

 

14, 14, 21, 42, 105, ?

 

A) 285 B) 315
C) 305 D) 215
 
Answer & Explanation Answer: B) 315

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

9 18746
Q:

Three cats are roaming in a zoo n such a way that when cat A takes 5 steps, B takes 6 steps and C takes 7 steps.But the 6 steps of A are equal to the 7 steps of B and 8 steps of C. what is the ratio of their speeds?

A) 140:144:147 B) 40:44:47
C) 15:21:28 D) 252:245:240
 
Answer & Explanation Answer: A) 140:144:147

Explanation:

Frequency of step of A:B:C = 5 : 6 : 7

But in terms of size of step, 6A = 7B = 8C

Therefore, Ratio of speeds of A, B and C = 5/6 : 6/7 : 7/8 = 140 : 144 : 147

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Filed Under: Ratios and Proportions

45 18745