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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

PQ is a tangent to the circle at T. If TR = TS where R and S are points on the circle and ∠RST = 65°, the ∠PTS =

A) 65° B) 130°
C) 115° D) 55°
 
Answer & Explanation Answer: C) 115°

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Q:

Average of the height of 251 students of a school is 48. If the average of the height of the boys is 51 and the average of the height of the girls is 29, then what will be the ratio of the total height of boys and the total height of girls respectively?

 

A) 323 : 29 B) 31 : 441
C) 29 : 323 D) 441 : 23
 
Answer & Explanation Answer: A) 323 : 29

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Filed Under: Ratios and Proportions
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Q:

If (X/4) = (Y/5) = (Z/9), then what is X : Y : Z?

A) 8 : 10 : 19 B) 4 : 5 : 9
C) 45 : 36 : 20 D) 15 : 12 : 7
 
Answer & Explanation Answer: B) 4 : 5 : 9

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Filed Under: Ratios and Proportions
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Q:

If the parallel sides of a trapezium are 8 cm and 4 cm, M and N are the mid points of the diagonals of the trapezium, then length of MN is

A) 12 cm B) 6 cm
C) 1 cm D) 2 cm
 
Answer & Explanation Answer: D) 2 cm

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Filed Under: Area
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Q:

The area of a rhombus having one side 10 cm and one diagonal 12 cm is

A) 48 cm2 B) 96 cm2
C) 144 cm2 D) 192 cm2
 
Answer & Explanation Answer: B) 96 cm2

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Q:

In triangle ABC, AB = 8 cm, angle A is bisected internally to intersect BC at D. BD = 6 cm and DC = 7.5 cm. What is the length of CA?

A) 12 cm B) 10 cm
C) 12.5 cm D) 10.5 cm
 
Answer & Explanation Answer: B) 10 cm

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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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Q:

What is the average of all the one digit and two digit natural numbers?

A) 25 B) 40
C) 50 D) 99
 
Answer & Explanation Answer: C) 50

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Filed Under: Average
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