Aptitude and Reasoning Questions

Q:

The average age of students of a class is 15.8 years. The average age of boys in the class is 16.4 years and that of the girls is 15.4 years. The ratio of the number of boys to the number of girls in the class is:-

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

Explanation:

Let the ratio be x : y
Total boys = 16.4 X x
Total girls = 15.4 X y
Total number of students in class = 16.4x + 15.4y
The average age of all students is 15.8
The total age of boys is 15.8x
The total age of girls is 15.8y
16.4x + 15.4y = 15.8x + 15.8y
0.6 x = 0.4 y
x/y = 0.4/0.6 = 2/3

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

2 1899
Q:

Two students appeared for an examination. One of them secured 21 marks more than the other and his marks were 80% of the sum of their marks. The marks obtained by them are

A) 88 and 67 B) 89 and 68
C) 28 and 7 D) 98 and 77
 
Answer & Explanation Answer: C) 28 and 7

Explanation:
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Filed Under: Average
Exam Prep: AIEEE , Bank Exams , CAT

1 1899
Q:

A rice trader buys 12 quintals of rice for Rs 1,870. 15% rice is lost in transportation. At what rate should he sell to earn 20% profit?

A) Rs 110.3 per quintal B) Rs 187 per quintal
C) Rs 220 per quintal D) Rs 224 per quintal
 
Answer & Explanation Answer: C) Rs 220 per quintal

Explanation:
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Filed Under: Profit and Loss
Exam Prep: Bank Exams

3 1898
Q:

A cone is hollowed out of a solid wooden cube of side 7 cm. The diameter and height of the cone is same as the side of the cube. What is the volume of the remaining cube?

A) 253.17 cubic cms B) 228.84 cubic cms
C) 143.26 cubic cms D) 257.68 cubic cms
 
Answer & Explanation Answer: A) 253.17 cubic cms

Explanation:
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0 1898
Q:

The areas of two similar triangles ΔABC and ΔPQR are 121 sq cms and 64 sq cms respectively. If PQ = 12 cm, what is the length (in cm) of AB?

A) 7.25 B) 6.25
C) 16.5 D) 5.25
 
Answer & Explanation Answer: C) 16.5

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

0 1898
Q:

The least number to be added to 13851 to get a number which is divisible by 87 is

A) 18 B) 43
C) 54 D) 69
 
Answer & Explanation Answer: D) 69

Explanation:
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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

0 1898
Q:

Reflection of the point (-3,6) in the x-axis is

A) (3,6) B) (6,-3)
C) (-3,-6) D) (-6,3)
 
Answer & Explanation Answer: C) (-3,-6)

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

0 1898
Q:

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
VWX, BCD, HIJ, ?

A) MOQ B) NOP
C) GHI D) TUV
 
Answer & Explanation Answer: B) NOP

Explanation:
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Filed Under: Alphabet Test
Exam Prep: Bank Exams

0 1898