Quantitative Aptitude - Arithmetic Ability Questions

Q:

The line passing through (-2,5) and (6,b) is perpendicular to the line 20x + 5y = 3. Find b?

A) -7 B) 4
C) 7 D) -4
 
Answer & Explanation Answer: C) 7

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Q:

If 2x+4-2x+2=3, then the value of x?

A) 0 B) 2
C) -1 D) -2
 
Answer & Explanation Answer: D) -2

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Q:

If cos3A = X, then value of X?

A) 4cos3A - 3cosA B) 4cos3A + 3cosA
C) 3cosA - 4cos3A D) cosA + 4cos3A
 
Answer & Explanation Answer: A) 4cos3A - 3cosA

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Q:

If a - b = -1 and ab = 6, then what is the value of a3- b3?

A) 33 B) -19
C) 18 D) 35
 
Answer & Explanation Answer: B) -19

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Q:

A contractor has got two orders A and B. On one (A) he spends Rs. 25,000 and makes a bill of Rs. 30,500. On the other (B) he makes a bill keeping a profit of 20%. Which of the two orders is more profitable to him?

A) B B) A
C) A nor B D) None of the above
 
Answer & Explanation Answer: B) A

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Filed Under: Profit and Loss
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Q:

Working 7 hours in a day, 4 men can do a piece of work in 8 days. Working 8 hours in a day, the required number of men to perform the same work in 4 days will be

A) 8 B) 4
C) 7 D) 9
 
Answer & Explanation Answer: C) 7

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Filed Under: Time and Work
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Q:

Determine the value of 'x' when 3x3 = 27

A) 1 B) 3
C) 9 D) 12
 
Answer & Explanation Answer: C) 9

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Filed Under: Square Roots and Cube Roots
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Q:

Each question contains Quantity I and Quantity II. Read the contents clearly and answer your questions accordingly.

Quantity I: 3 years ago the ratio of age of A and B is 3: 4 after 2 years the sum of their ages is 45. Then find the present age of A? 

Quantity II: 5 years ago, the ratio of age of p and Q id 3: 4 P’s age after 6 years is equal to the present age of Q. the find the present age of P?

 

 

A) Quantity I > Quantity II B) Quantity I ≥ Quantity II
C) Quantity I < Quantity II D) Quantity I < Quantity II
 
Answer & Explanation Answer: C) Quantity I < Quantity II

Explanation:

Quantity I= Let 3 year ago the age of A and B be 3x and 4x respectively

Then ATQ 3x+5+4x+5=45 X=5

Hence present age of A=3x+3=18year

Quantity II== Let 5 year ago the age of p and q be 3x and 4x respectively 

Then ATQ 

3x+11=4x+5 

X=6 Hence present age of P=3x+5=23

Hence Quantity I < Quantity II

 

 

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Filed Under: Problems on Ages

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