Quantitative Aptitude - Arithmetic Ability Questions

Q:

In a school 60% of the students are girls. If number of boys is 480, then what is the total number of students in the school?

A) 1200 B) 840
C) 96 D) 1320
 
Answer & Explanation Answer: A) 1200

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Q:

The circumferences of two circles are touching externally. The distance between their centres is 12 cm. The radius of one circle is 7 cm. Find the diameter(in cm) of the other circle.

A) 12 B) 10
C) 8 D) 5
 
Answer & Explanation Answer: B) 10

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Filed Under: Area
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Q:

If 35% of A is equal to 60% of B, then what is the ratio of A and B?

A) 8 : 13 B) 12 : 7
C) 2 : 3 D) 13 : 7
 
Answer & Explanation Answer: B) 12 : 7

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Q:

A line passing through the origin perpendicularly cuts the line 3x - 2y = 6 at point M. Find M?

A) (18/13, 12/13) B) (18/13, -12/13)
C) (-18/13, -12/13) D) (-18/13, 12/13)
 
Answer & Explanation Answer: B) (18/13, -12/13)

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Q:

The perimeters of a square and an equilateral triangle are equal. If the diagonal of the square is 9 cm, what is the area of the equilateral triangle?

A) 18√3 sq cm B) 9√3 sq cm
C) 18√2 sq cm D) 9√2 sq cm
 
Answer & Explanation Answer: A) 18√3 sq cm

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Q:

A mobile plan costs Rs. 32 for 6 minutes. What is the approximate cost, in rupees, for 4 minutes?

A) 21.30 B) 21.40
C) 21.20 D) 21.50
 
Answer & Explanation Answer: A) 21.30

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Q:

The effective annual rate of interest corresponding to a nominal rate of 15% per annum payable half-yearly is

A) 15.56 percent B) 30 percent
C) 31.13 percent D) 15 percent
 
Answer & Explanation Answer: A) 15.56 percent

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Filed Under: Simple Interest
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Q:

The reciprocal of the sum of the reciprocals of 2/9 and 7/10 is

A) 14/83 B) 83/14
C) 90/83 D) 83/90
 
Answer & Explanation Answer: A) 14/83

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Filed Under: Problems on Numbers
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