Quantitative Aptitude - Arithmetic Ability Questions

Q:

The arithmetic mean of the marks scored by students of a class is 58. 20% of them secured a mean score of 60. The mean score of another 30% of the students was 40. The mean score of the remaining students is

A) 65 B) 66
C) 68 D) 70
 
Answer & Explanation Answer: C) 68

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Filed Under: Percentage
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Q:

Select the odd word/letters/number/number pair from the given alternatives.

A) 12 B) 24
C) 80 D) 48
 
Answer & Explanation Answer: A) 12

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Filed Under: Odd Man Out
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Q:

The difference between the ages of two sisters is 4 years when father's age is 54. Father is elder by 2 years to mother . Younger sister's age is half of mother's age. Find the age of elder sister.

A) 26 B) 27
C) 29 D) 30
 
Answer & Explanation Answer: D) 30

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Filed Under: Problems on Ages
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Q:

In the first 36 overs of a cricket match, the run rate was 4.3 runs/over. Calculate the required run rate in the remaining 14 overs to reach the target of 271 runs?

A) 8.9 B) 9.5
C) 8.3 D) 7.7
 
Answer & Explanation Answer: C) 8.3

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Filed Under: Average
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Q:

The average of 5 consecutive numbers is 50%, then difference between 'product of largest and smallest number' with 'product of fourth and second number' is

A) 3 B) -3
C) 0 D) 10
 
Answer & Explanation Answer: B) -3

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Q:

A sum of Rs 800 becomes Rs 1000 in 2 years at simple interest. What is the per annum rate of interest (in percent)?

 

A) 12.5   B)  25  
C)  8.5   D)  17
 
Answer & Explanation Answer: A) 12.5  

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Filed Under: Simple Interest
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Q:

If Reena sold 12 mobile phones for Rs. 1,88,160 which cost Rs. 14,056 per phone, what was the total profit made by her?

A) Rs. 19,488 B) Rs. 17,621
C) Rs. 21,014 D) Rs. 18,958
 
Answer & Explanation Answer: A) Rs. 19,488

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Filed Under: Profit and Loss
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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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