Aptitude and Reasoning Questions

Q:

If 36 men can do a piece of work in 25 hours, in how mwny hours will15 men do it?

A) 40 B) 50
C) 60 D) 70
 
Answer & Explanation Answer: C) 60

Explanation:

Let the required no of hours be x. Then

 

Less men , More hours    (Indirct Proportion)

 

Therefore,  15:36 ::25:x 

=> (15 x X)=(36 x 25)  => x = 60

 

Hence, 15 men can do it in 60 hours.

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96 27905
Q:

The difference between the compound interest and the simple interest accrued on an amount of Rs. 18,000 in 2 years was Rs. 405. What was the rate of interest p.c.p.a. ?

A) 12% B) 13%
C) 14% D) 15%
 
Answer & Explanation Answer: D) 15%

Explanation:

Let the rate be R% p.a. Then,

 

18001+R1002-1800-1800*R*2100=405

1800100+R210000-1-2R100=405

 1800100+R2-10000-200R10000=405

95*R2=405 R2=405*59=225R=15 
Rate = 15%.

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Filed Under: Compound Interest
Exam Prep: Bank Exams
Job Role: Bank PO

23 27881
Q:

In the following question, select the odd letter/letters from the given alternatives.

 

A) EIN   B) JNS  
C) MQV   D) OSY
 
Answer & Explanation Answer: D) OSY

Explanation:
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Filed Under: Odd Man Out
Exam Prep: Bank Exams

1 27833
Q:

If the length of a certain rectangle is decreased by 4 cm and the width is increased by 3 cm, a square with the same area as the original rectangle would result. Find the perimeter of the original rectangle.

A) 20 B) 30
C) 40 D) 50
 
Answer & Explanation Answer: D) 50

Explanation:

Let x and y be the length and breadth of the rectangle respectively.
Then, x - 4 = y + 3 or x - y = 7 ----(i)
Area of the rectangle =xy; Area of the square = (x - 4) (y + 3)
(x - 4) (y + 3) =xy <=> 3x - 4y = 12 ----(ii)
Solving (i) and (ii), we get x = 16 and y = 9.
Perimeter of the rectangle = 2 (x + y) = [2 (16 + 9)] cm = 50 cm.

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Filed Under: Area
Exam Prep: Bank Exams
Job Role: Bank PO

21 27830
Q:

A man traveled from the village to the post-office at the rate of 25 kmph and walked back at the rate of 4 kmph. If the whole journey took 5 hours 48 minutes, find the distance of the post-office from the village ?

A) 40 km B) 30 km
C) 20 km D) 10 km
 
Answer & Explanation Answer: C) 20 km

Explanation:

Average speed = 2aba+b, here a=25 b=4
= 2 x 25 x 4/(25+4) = 200/29 km/hr.

Distance covered in 5 hours 48 minutes
= Speed x time = (200/29)x (29/5) Distance covered in 5 hours 48 minutes = 40kms.

Distance of the post office from the village = (40/2) = 20 km.

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Filed Under: Time and Distance
Exam Prep: CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk

31 27826
Q:

Given intercharges : 

Signs + and x and numbers 4 and 5.

A) 5 x 4 + 20 = 40 B) 5 x 4 + 20 = 85
C) 5 x 4 + 20 = 104 D) 5 x 4 + 20 = 95
 
Answer & Explanation Answer: C) 5 x 4 + 20 = 104

Explanation:

 On interchanging + and x and 4 and 5 in (c),

we get the equation as 
4 + 5 x 20 = 104 or 104 = 104, which is true.

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210 27806
Q:

Find the circumference (in cm) of a circle of radius 7 cm.

 

A) 56 B) 44
C) 16 D) 32
 
Answer & Explanation Answer: B) 44

Explanation:
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Filed Under: Area
Exam Prep: Bank Exams

2 27796
Q:

Identify the odd one from the list below.

 

 

A) Stream B) Bridge
C) Canal D) River
 
Answer & Explanation Answer: B) Bridge

Explanation:
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Filed Under: Odd Man Out
Exam Prep: Bank Exams

0 27781