Job Roles

• Software Architect

Q:

Each edge of a cube is increased by 20% then the percentage increase in surface area of the cube is :

 A) 144% B) 40% C) 44% D) 72.8%

Explanation:

The surface area of a cube = 6$a2$ =  6 $side2$

New  Surface area = 6 x 1.44$a2$

Therefore, %

9 6058
Q:

The average of a set of whole numbers is 27.2. when the 20% of the elements are eliminated from the set of numbers then the average become 34. The number of elements in the new set of numbers can be :

 A) 27 B) 35 C) 52 D) 63

Explanation:

only (c) is correct since it is divisible by 4.

Let the original number of element  be x then the new no.of elements will be

So K must be divisible by 4

Since,      x =  Kx5/4

6 7006
Q:

A number X is mistakenly divided by 10 instead of being multiplied by 10. What is the percentage error in the result?

 A) -99% B) +99% C) -100% D) +100%

Explanation:

By mistake = x/10

Actual value = x * 10

% Change =   = 99% (negative)

Since actual value is greater than the wrong value.

7 10730
Q:

In Veeru Bhai Pvt.limited company 60% of the employees are men and 48% of the employees are Engineer and 66.6% of these are men. The percentage of women who are not engineers:

 A) 33.33% B) 60% C) 52% D) 46.66%

Explanation:

Men               Women

600x               400x

Total engineers = 480x

Male engineers = 480x X 0.66 = 320

Women who are Engineers  = 160x

Women are not Engineers  = 400x - 160x = 240x

Required percentage = $240400x100$ = 60%

7 7625
Q:

A salesman gets commission on total sales at 9%. If the sale is exceeded Rs.10,000 he gets an additional commission as bonus of 3% on the excess of sales over Rs.10,000. If he gets total commission of Rs.1380, then the bonus he received is:

 A) Rs.180 B) Rs.120 C) Rs.480 D) data insufficient

Explanation:

Commission up to 10000 = $10000x9100$ = 900

Again after 10000,

Commission    :   Bonus

9       :   3

3x        :   x

Therefore,   Bonus =

83 32248
Q:

In an examination a candidate got 30% marks and failed by 30 marks. If the passing marks are 60% of the total marks, then the maximum marks will be:

 A) 450 B) 600 C) 300 D) 100

Explanation:

Passing marks are 0.6x

so 0.3x + 30 = 0.6x   => x = 100

12 8197
Q:

Lagaan is levied on the 60% of the cultivated land. The revenue department collected total Rs. 3,84,000 through the lagaan from the village of Sukhiya. Sukhiya, a very rich farmer , paid only Rs.480 as lagaan. The percentage of total land of Sukhiya over the total taxable land of the village is:

 A) 0.15% B) 15% C) 0.125% D) None of these

Answer & Explanation Answer: D) None of these

Explanation:

Total land of Sukhiya = 480x/0.6 = 800x

Cultivated land of village = 384000x

Required percentage =

9 8573
Q:

A Shopkeeper  charges sales tax of x% upto Rs.2,000 and above it he charges y%. A customer pays total tax of Rs 320, when he purchases the goods worth Rs. 6,000 and he pay's the total tax of Rs. 680 for the goods worth Rs. 12,000. The value of (x-y) is:

 A) 0 B) -2 C) -4 D) 5

Explanation:

and

x = 4  and  y = 6

x-y = -2