Aptitude and Reasoning Questions

Q:

A boat travels 72 km downstream in 8 hours and 84 km upstream in 12 hours. Find the speed of the boat in still water and the speed of the water current ?

A) 9 and 3 kmph B) 6 and 7 kmph
C) 8 and 1 kmph D) 7 and 2 kmph
 
Answer & Explanation Answer: C) 8 and 1 kmph

Explanation:

Downstream speed = 72km/8hrs  = 9 kmph
upstream speed = 84km/12hrs = 7 kmph
speed of boat = avg of downstream and upstream speeds
speed of boat = (9+7)/2kmph = 8 kmph.
current speed = half of the difference of downstream and upstream speeds
currend speed = (9-7)/2kmph = 1 kmph

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Filed Under: Boats and Streams
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank PO

19 9819
Q:

Buses start from a bus terminal with a speed of 20 km/hr at intervals of 10 minutes. What is the speed of a man coming from the opposite direction towards the bus terminal if he meets the buses at intervals of 8 minutes?

A) 5 kmph B) 6 kmph
C) 7.5 kmph D) 8 kmph
 
Answer & Explanation Answer: A) 5 kmph

Explanation:

Let p be the speed of man in kmph

According to the given data in the question,

Distance travelled by bus in 10 min with 20 kmph == Distance travelled by man in 8 min with (20 + p) kmph in opposite direction

=> 20 x 10/60 = 8/60 (20 + p)

=> 200 = 160 + 8p

=> p = 40/8 = 5 kmph.

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14 9818
Q:

The given graph shows the distribution of minerals in the human body?

 

 

Based on the given data, what is the ratio of the metal with the second highest percentage of distribution to that with the second lowest percentage of distribution in the human body?

 

A) 1 : 2 B) 2 : 1
C) 3 : 1 D) 4 : 1
 
Answer & Explanation Answer: B) 2 : 1

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

0 9812
Q:

Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative

Assertion (A) : An atom is neutral despite the charged particles in it. 

Reason (R) : The neutrons do not have any charge. 

A) Both A and R are true and R is the correct explanation of A. B) Both A and R are true but R is NOT the correct explanation of A.
C) A is true but R is false. D) A is false but R is true.
 
Answer & Explanation Answer: B) Both A and R are true but R is NOT the correct explanation of A.

Explanation:

An atom contains the positively charged protons and an equal number of negatively charged electrons So, it is neutral

 

 

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Filed Under: Assertion and Reason

1 9802
Q:

If logxl+m-2n = logym+n-2l = logzn+l-2m, then xyz is equal to

A) 0 B) 1
C) lmn D) 2
 
Answer & Explanation Answer: B) 1

Explanation:
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Filed Under: Logarithms

95 9799
Q:

Study the following diagram and answer questions based on it.

 

The colour preferences of children are given.

 

 

How many children like both brown and white but not black?

 

A) 10 B) 20
C) 50 D) None
 
Answer & Explanation Answer: D) None

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

1 9798
Q:

What is the antonym of "Censure" ?

A) commend B) augment
C) enthral D) reform
 
Answer & Explanation Answer: C) enthral

Explanation:

"Censure" means expressing formal disapproval. "Enthral" means spellbound or enchant, which is farthest in meaning to the given word.

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Filed Under: Analogy
Exam Prep: CAT
Job Role: Bank PO

25 9798
Q:

In the arrangement of letters and numbers given below , first all the numbers are arranged in the descending order and then all the letters are written in the alphabetical order. Then which letter / number will be fourth to the left of the 11th element from the left end in the new arrangement?

 

P N 3 W 9 Q 1 8 L K 4 6 B 7 

A) K B) 3
C) B D) 1
 
Answer & Explanation Answer: D) 1

Explanation:

New arrangement becomes as follows:

9 8 7 6 4 3 1 B K L N P Q W

4th to the left of 11th element from the left means (10 - 3 = ) 7th element from the left, i.e 1

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Filed Under: Alphabet Test

16 9798