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 Lawn roller makes 20 revolutions in one hour. The radius it runs through 25 minutes is

A) 50π7 B) 150π7
C) 250π3 D) 50π3
 
Answer & Explanation Answer: D) 50π3

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Q:

In the following pair of words, pick the odd pair which is odd from the others?

A) Hydrogen : Sulphuric Acid B) Chlorine : Salt
C) Oxygen : Water D) Nitrogen : Hydrochloric Acid
 
Answer & Explanation Answer: D) Nitrogen : Hydrochloric Acid

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Q:

What is the slope of the line parallel to the line passing through the points (-­4,­-6) and (2,­-3)?

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

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Q:

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

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

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Q:

What is the equation of the line which passes through the points (3,­2) and (5,3)?

A) 5x ­- 2y = ­-19 B) 5x ­- 2y = 19
C) 5x + 2y = ­31 D)  5x + 2y = -31
 
Answer & Explanation Answer: B) 5x ­- 2y = 19

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Q:

If x = 5 + 15 - 1 & y = 5 - 15 + 1 , then find the value of x2 - y2.

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

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Q:

The four walls and ceiling of a room of length 25 m, breadth 12 m and height 10 m are to be painted. Painter A can paint 200 m2 in 5 days, Painter B can paint 250 m2 in 2 days. If A and B work together, they will finish the job in

A) 6 days B) 6 10/33 days
C) 7 10/33  days D) 8 days
 
Answer & Explanation Answer: B) 6 10/33 days

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Filed Under: Area
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