Aptitude and Reasoning Questions

Q:

Rushi and Arun are two business partners. They invest their capital in the ratio 7 : 9. After 6 months, a third person Ram joins them with a capital of two third of that of Arun. After a year, profit share of Rushi was Rs. 5600, then find total profit?

A) 26,250 B) 19,200
C) 18,650, D) 15,200
 
Answer & Explanation Answer: D) 15,200

Explanation:

Ratio of investment of all the three members = (7 x 12) : (9 x 12) : (2/3 x 9 x 6)

= 7 : 9 : 3

Given Rushi's one year profit = Rs. 5600

=> Let the total profit = Rs. P

Then,

P x 7/19 = 5600

Total profit P = 19 x 5600/7 = Rs. 15,200.

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Filed Under: Partnership
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8 7723
Q:

How many ways can you select 17 songs for mix CD out of possible 38 songs?

A) 2878 B) 2878 x 10^2
C) 290183753 D) 2878 x 10^10
 
Answer & Explanation Answer: D) 2878 x 10^10

Explanation:

since it is a combination = 38C17 = 2878 x 10^10

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0 7723
Q:

A motorboat can go 10 miles downstream on a river in 20 min. It takes 30 min for this boat to go back at the same 10 miles. Find the speed of the current ?

A) 8 m/h B) 5 m/h
C) 7 m/h D) 6 m/h
 
Answer & Explanation Answer: B) 5 m/h

Explanation:

As the distance travelled is constant, the time taken is inversely proportional to speed.

Let 'u' be the speed of the current and 'v' be the speed of the boat.

Speed of the boat downstream = v + u & upstream = v - u

=> v+u/v-u = 30/20 => v/u = 5 => v = 5u

=> v + u = 6u = 10/20/60 miles/hr

=> 6u = 30 m/h

=> u = 5 m/h

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Filed Under: Boats and Streams
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20 7722
Q:

In the following question, various terms of an alphanumerical series are given with one or more terms missing as shown by (?). Choose the missing terms out of the given alternatives. BMO, EOQ, HQS, ?

A) KSU B) SOV
C) SOW D) LMN
 
Answer & Explanation Answer: A) KSU

Explanation:

The first letter moves 3 steps forward. The second and third letters move 2 steps forward.

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Filed Under: Number Series

20 7712
Q:

Group the given figures into three classes using each figure only once.

3_201484718690.png image

A) 1,3,5 ; 2,4,7 ; 6,8,9 B) 1,5,7 ; 2,3,6 ; 4,8,9
C) 1,3,5 ; 2,6,7 ; 4,8,9 D) 1,6,9 ; 2,4,7 ; 3,5,8
 
Answer & Explanation Answer: D) 1,6,9 ; 2,4,7 ; 3,5,8

Explanation:

1, 6, 9 are figures which are half shaded by slanting lines.
2, 4, 7 are all divided into equal parts (either three or four parts) by straight lines and also have a black circle at the centre.
3, 5, 8 have similar designs and have their four corners shaded black.

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Filed Under: Grouping of Images
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26 7705
Q:

Sally has never received a violation from the Federal Aviation Administration during her 16-year flying career. Sally must be a great pilot. 

 

Which of the following can be said about the reasoning above?

A) The definitions of the terms create ambiguity. B) The argument uses circular reasoning.
C) The argument works by analogy. D) The argument is built upon hidden assumptions.
 
Answer & Explanation Answer: D) The argument is built upon hidden assumptions.

Explanation:

From the above statemnts only "The argument is built upon hidden assumptions." will be true

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16 7703
Q:

Two trains are running with speeds 30 kmph and 58 kmph respectively in the same direction. A man in the slower train passes the faster train in 18 seconds. Find the length of the faster train?

A) 105 mts B) 115 mts
C) 120 mts D) 140 mts
 
Answer & Explanation Answer: D) 140 mts

Explanation:

Speeds of two trains = 30 kmph and 58 kmph

=> Relative speed = 58 - 30 = 28 kmph = 28 x 5/18 m/s = 70/9 m/s

Given a man takes time to cross length of faster train = 18 sec

 

Now, required Length of faster train = speed x time = 70/9  x  18 = 140 mts.

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3 7702
Q:

Find the ratio of the surfaces of the inscribed and circumscribed spheres about a cube.

A) 1:2 B) 1;3
C) 1:4 D) 1:5
 
Answer & Explanation Answer: A) 1:2

Explanation:

 4×3.14×r2 : 4×3.14×r2 = 1 : 2  

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Filed Under: Volume and Surface Area
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