Aptitude and Reasoning Questions

Q:

A uniformly moving train of length 480 m takes 3 minutes to completely cross a platform. If the same train, with the same speed crosses a pole completely in 30 sec, then the length of the platform is -

A) 1 km B) 600 m
C) 4.8 km D) 1.2 km
 
Answer & Explanation Answer:

Explanation:

Let length of platform be ‘y’metres.

Then, at the platform,Distance travelled = y + (length of train) = (y + 480)m

Then, Speed of train = (y + 480)m / (3x60) sec = (y+480)/180 ...(1)

Also, at the pole,Distance travelled = length of train = 480m

Then, Speed of train = 480m / 30sec = 16 m/s ...(2)

Equating eq.(1) & eq.(2), we get,

(y+480)/180 = 16(y+480) = 16 x 180 = 2880

y = 2880 –480 = 2400m or 2.4 km long platform.

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Filed Under: Problems on Trains
Exam Prep: Bank Exams
Job Role: Bank PO , Bank Clerk

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Q:

Deepak starts walking straight towards east. After walking 75 metres, he turns to the left and walks 25 metres straight. Again he turns to the left, walks a distance of 40 metres straight, again he turns to the left and walks a distance of 25 metres. How far is he from the starting point?

A) 35 m B) 50 m
C) 115 m D) 140 m
 
Answer & Explanation Answer: A) 35 m

Explanation:
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Filed Under: Direction Sense Test
Exam Prep: Bank Exams

5 2555
Q:

How many job applicants had applied if the ratio of selected to unselected was 19:17. If 1,200 less had applied and 800 less selected, then the ratio of selected to unselected would have been 1:1.

A) 6000 B) 7200
C) 8400 D) 4800
 
Answer & Explanation Answer: B) 7200

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

2 2554
Q:

Count the number of triangles in the following figure:

A) 10 B) 7
C) 8 D) 9
 
Answer & Explanation Answer: D) 9

Explanation:
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Filed Under: Image Analysis
Exam Prep: AIEEE , Bank Exams , CAT

2 2553
Q:

Ashok can row upstream at 8 kmph and downstream at 12kmph.What is the speed of the stream ?

A) 6 km/hr B) 3 km/hr
C) 2 km/hr D) 4.5 km/hr
 
Answer & Explanation Answer: C) 2 km/hr

Explanation:

If the speed downstream is a kmph and the speedup stream is b kmph then
Speed of the stream = 1/2 x (a–b) kmph
Speed downstream a = 12kmph
Speed upstream b = 8 kmph
Speed of the stream = 1/2 x (a–b) = 1/2 x (12–8)= 4/2 = 2 kmph

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Filed Under: Boats and Streams
Exam Prep: Bank Exams

7 2553
Q:

In the given figure, PQRS is a square inscribed in a circle of radius 4 cm. PQ is produced till point Y. From Y a tangent is drawn to the circle at point R. What is the length (in cm) of SY ?

A) 4√10 B) 2√10
C) 6√10 D) 3√5
 
Answer & Explanation Answer: A) 4√10

Explanation:
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Filed Under: Area
Exam Prep: Bank Exams

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Q:

In an MBA selection process, the ratio of selected to unselected was 11:2. If 40 less had applied and 20 less selected, the ratio of selected to unselected would have been 10:1. How many candidates had applied for the process?

A) 220 B) 260
C) 300 D) 340
 
Answer & Explanation Answer: B) 260

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

7 2550
Q:

Choose the set of figures which follows the given rule.

Rule: Closed figures become more and more open and open figures become more and more closed.

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

Explanation:
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Filed Under: Rule Detection

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