Quantitative Aptitude - Arithmetic Ability Questions

Q:

Solve the following.

 

-4 - (-7 - 12 / 4) = ?

A) -2 B) 6
C) 0.75 D) -14
 
Answer & Explanation Answer: B) 6

Explanation:
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Q:

Solve the following

 

24 / (20 - 12 / 3 x 8) = ?

A) -2 B) -3
C) 6 D) 3
 
Answer & Explanation Answer: A) -2

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0 46808
Q:

Which value is closest to [5.168 x 4453 x 3.194 / 67.999 x 4224.017]

 

A) 0.2 B) 0.002
C) 2 D) 0.02
 
Answer & Explanation Answer: A) 0.2

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Q:

The length of a rectangle is halved, while its breadth is tripled. What is the percentage change in area?

A) 20% B) 30%
C) 40% D) 50%
 
Answer & Explanation Answer: D) 50%

Explanation:

Let original length = x and original breadth = y.

Original area = xy. 

New length = x/2 and New breadth=3y 

New area = 32xy 

Therefore,  Increase in area = New area-original area = 32xy-xy=12xy 

 

Therefore,  Increase % = increase in area original area*100=12xyxy*100=50 %

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47 46689
Q:

45 + 47 = ?

 

A) 8/12 B) 48/35
C) 8/35 D) 16/35
 
Answer & Explanation Answer: B) 48/35

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Q:

A can contains a mixture of two liquids A and B in the ratio  7 : 5. When 9 litres of mixture are drawn off and the can is filled with B, the ratio of A and B becomes 7 : 9. How many litres of liquid A was contained by the can initially?

A) 10 B) 20
C) 21 D) 25
 
Answer & Explanation Answer: C) 21

Explanation:

Suppose the can initially contains 7x and 5x litres of mixtures A and B respectively

 

Quantity of A in mixture left =7x-712×9=7x-214 litres.

 

Quantity of B in mixture left =  5x-512×9=5x-154litres.

 

7x-2145x-154+9=79

 

28x-2120x+21=79

 

x=3

 So, the can contained 21 litres of A.

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272 46657
Q:

A parallelogram has sides 30m and 14m and one of its diagonals is 40m long. Then its area is

A) 136 B) 236
C) 336 D) 436
 
Answer & Explanation Answer: C) 336

Explanation:

let ABCD be the given parallelogram 

area of parallelogram ABCD = 2 x (area of triangle ABC) 

now a = 30m, b = 14m and c = 40m

 s=1/2 x (30+14+40) = 42 

 

Area of triangle ABC = ss-as-bs-c  

 

= 4212282= 168sq m 

area of parallelogram ABCD = 2 x 168 = 336 sq m

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103 46642
Q:

What least number must be subtracted from 13601, so that the remainder is divisible by 87 ?

A) 23 B) 31
C) 29 D) 37
 
Answer & Explanation Answer: C) 29

Explanation:

87)13601(156
       87
       -----
       490
       435
        -----
        551
        522
         -----
         29
         -----
Required number is 29.

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Filed Under: Numbers

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