Quantitative Aptitude - Arithmetic Ability Questions

Q:

The average weight of 25 bags is 55 kg. The weight of one bag was misread as 65 instead of 56. Find the correct mean value.

A) 55.25 B) 55.36
C) 54.64 D) 55.65
 
Answer & Explanation Answer: C) 54.64

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Filed Under: Average
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Q:

A certain sum of money becomes double of itself in 15 years at a rate of simple interest. In how many years will it become 5 times of itself at the same rate of simple interest

A) 45 B) 37.5
C) 75 D) 60
 
Answer & Explanation Answer: D) 60

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Q:

The slope of the line passing through the points (-5,1) and (x,-4) is -5/8. Find x.

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

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Q:

A sphere has the same curved surface area as a cone of vertical height 40 cm and radius 30 cm. The radius of the sphere is

A) 5√5 cm B) 5√3 cm
C) 5√15 cm D) 5√10 cm
 
Answer & Explanation Answer: C) 5√15 cm

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Filed Under: Volume and Surface Area
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Q:

The point equidistant from the sides of a triangle is called

A) Circumcenter B) Incentre
C) Orthocentre D) Centroid
 
Answer & Explanation Answer: B) Incentre

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Filed Under: Volume and Surface Area
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Q:

If the curved surface area of a right circular cone is 10010 sq cm and its radius is 35 cm, find its volume?

A) 6930 cubic cm B) 13860 cubic cm
C) 3465 cubic cm D) 27720 cubic cm
 
Answer & Explanation Answer: B) 13860 cubic cm

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Filed Under: Volume and Surface Area
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Q:

A hexagonal prism has 18 edges. How many vertices does it have?

A) 8 B) 12
C) 20 D) 22
 
Answer & Explanation Answer: B) 12

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Filed Under: Volume and Surface Area
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Q:

The mean of a distribution is 20 and the standard deviation is 4. What is the value of the coefficient variation?

A) 10% B) 20%
C) 40% D) 60%
 
Answer & Explanation Answer: B) 20%

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Filed Under: Probability
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