Quantitative Aptitude - Arithmetic Ability Questions

Q:

Find the L.C.M of 4/5, 2/3 and 5/7.

A) 25 B) 20
C) 40 D) 30
 
Answer & Explanation Answer: B) 20

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Filed Under: HCF and LCM
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Q:

If a3 + b3 = 28 and a + b = 4, then what is the value of ab?

A) -3 B) 2
C) 8 D) 3
 
Answer & Explanation Answer: D) 3

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Filed Under: Simplification
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Q:

A batsman scores 98 runs in the 17th match of his career. His average runs per match increased by 2.5. What is his average before the 17th match?

A) 58 B) 60.5
C) 63 D) 55.5
 
Answer & Explanation Answer: D) 55.5

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Filed Under: Average
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Q:

In a colored picture of blue and yellow color, blue and yellow color is used in the ratio of 4:3 respectively. If in upper half, blue : yellow is 2:3, then in the lower half blue : yellow is

A) 1 : 1 B) 2 : 1
C) 26 : 9 D) 9 : 26
 
Answer & Explanation Answer: C) 26 : 9

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Filed Under: Alligation or Mixture
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Q:

If a dairy mixes cow's milk which contains 10% fat with buffalo's milk which contains 20% fat, then the resulting mixture has fat (120/7)% of fat. What ratio was the cow's milk mixed with buffalo's milk?

A) 2 : 5 B) 1 : 5
C) 2 : 3 D) 2 : 1
 
Answer & Explanation Answer: A) 2 : 5

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Filed Under: Alligation or Mixture
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Q:

ax + 5y = 8 has slope of -4/3. What is the value of a?

A) 20/3 B) 3/20
C) -20/3 D) -3/20
 
Answer & Explanation Answer: A) 20/3

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Filed Under: Area
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Q:

Two numbers are 90% and 75% lesser than a third number. By what % should the first number be increased so that it becomes equal to the second number?

A) 250 B) 200
C) 150 D) 100
 
Answer & Explanation Answer: C) 150

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Filed Under: Percentage
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Q:

If Giridhar's salary is 5/3 times of Hariraj's and Shaunak's is 2/3 times of Hariraj's, what is the ratio of Giridhar's salary to Shaunak's.

A) 9:10 B) 10:9
C) 5:2 D) 2:5
 
Answer & Explanation Answer: C) 5:2

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Filed Under: Percentage
Exam Prep: Bank Exams

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