Quantitative Aptitude - Arithmetic Ability Questions

Q:

A man walks 1 km on 1st day , 2 km on 2nd day , 3 km on 3rd day and so on . The total distance the man covers in 10 days is

A) 40 Km B) 50 Km
C) 55 Km D) 58 Km
 
Answer & Explanation Answer: C) 55 Km

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Filed Under: Time and Distance
Exam Prep: Bank Exams

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Q:

A trader had 9 quintals of wheat. He sold a part of it at 10% profit and the rest at 20% profit, so that he made a total profit of 14 %. How much wheat did he sell at 20% profit?

A) 540 kg B) 360 kg
C) 180 kg D) 720 kg
 
Answer & Explanation Answer: B) 360 kg

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

A watch is listed for Rs.230 and is sold at a discount of 12%, then the sale price of the watch is

A) Rs.27.6 B) Rs.276
C) Rs.202.4 D) Rs.257.6
 
Answer & Explanation Answer: C) Rs.202.4

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Q:

In a class of 60 students there are 30 girls. The average weight of these girls is 58 Kg and average weight of the full class is 63 kgs. What is the average weight of the boys of the class?

A) 67 B) 66
C) 68 D) 65
 
Answer & Explanation Answer: C) 68

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

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Q:

A trader had 22 quintals of wheat. He sold a part of it at 23% profit and the rest at 33% profit, so that he made a total profit of 27%. How much wheat did he sell at 33% profit?

A) 1320 kg B) 440 kg
C) 880 kg D) 1760 kg
 
Answer & Explanation Answer: C) 880 kg

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

If p and q are the roots of the equation x2 –15x + r = 0 and p –q = 1, then what is the value of r ?

A) 55 B) 56
C) 60 D) 64
 
Answer & Explanation Answer: B) 56

Explanation:

In the below equation,

x2–15x + r = 0

sum of roots = p + q = -(-15)/1 = 15 (sum of roots for equation ax2+ bx + c is -b/a)

product of roots = pq = r/1 = r     (product of roots for equation ax2+ bx + c is c/a)

given p –q = 1

also we know that p+q = 15

subtracting the squares of both

(p+q)2 + (p-q)2 = 15^2–1

p2 + q2 + 2pq –p2 –q2 +2pq = 225 -1

4pq = 224

4r = 224

r = 56

 

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

Divide 13,680 in three parts such that 1st part is 3/5th of the third part and the ratio between 2nd and 3rd part is 4:7. How much is the first part?

 

A) 3780 B) 6300
C) 3600 D) 4800
 
Answer & Explanation Answer: A) 3780

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Filed Under: Percentage
Exam Prep: Bank Exams

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Q:

If a+b=3 then the value of a3+b3+9ab-­27 is

A) 24 B) 25
C) 0 D) 27
 
Answer & Explanation Answer: C) 0

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Filed Under: Simplification
Exam Prep: Bank Exams

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