Aptitude Test for Computer and IT Engineers - Set 3

1)   5% of 5% of Rs. 100 is

a. Rs. 0.25
b. Rs. 0.50
c. Rs. 10
d. Rs. 25
Answer  Explanation 

ANSWER: Rs. 0.25

Explanation:
percentage


2)   If 20% of an electricity bill is deducted, then Rs. 100 is still to be paid. How much was the original bill?

a. Rs. 110
b. Rs. 115
c. Rs. 120
d. Rs. 125
Answer  Explanation 

ANSWER: Rs. 125

Explanation:
percentage


3)   If X% of Y is 100 and Y% of Z is 200, find a relation between X and Z.

a. Z = X/2
b. Z = 2X
c. X = Z/4
d. Z = 4X
Answer  Explanation 

ANSWER: Z = 2X

Explanation:
percentage


4)   40% of greater number is equal to 60% of the smaller. If their sum is 150, then the greater number is

a. 70
b. 80
c. 90
d. 60
Answer  Explanation 

ANSWER: 90

Explanation:
percentage


5)   Two numbers are less than a third number by 30% and 37% respectively. How much percent is the second number less than the first?

a. 7%
b. 10%
c. 4%
d. 3%
Answer  Explanation 

ANSWER: 10%

Explanation:
percentage


6)   The difference between simple and compound interest on a certain sum of money for 2 years at 4 percent per annum is Re.1. The sum of money is

a. Rs. 600
b. Rs. 625
c. Rs. 560
d. Rs. 650
Answer  Explanation 

ANSWER: Rs. 625

Explanation:
compound interest


7)   A sum of money invested at compound interest amounts to Rs. 800 in 3 years and to Rs. 840 in 4 years. The rate of interest per annum is

a. 2(1/2)%
b. 4%
c. 5%
d. 6(2/3)%
Answer  Explanation 

ANSWER: 5%

Explanation:
compound interest


8)   If simple interest on a certain sum for 15 months at 7(1/2) % per annum exceeds the simple interest on the same sum for 8 months at 12(1/2)% per annum by Rs. 32.50, then the sum (in Rs.) is

a. 312
b. 312.50
c. 3120
d. 3120.50
Answer  Explanation 

ANSWER: 3120

Explanation:
simple interest


9)   In 4 years the simple interest on certain sum of money is 9/25 of the principal. The annual rate of interest is

a. 4%
b. 4(1/2)%
c. 9%
d. 10%
Answer  Explanation 

ANSWER: 9%

Explanation:
simple interest


10)   square root and cube root

a. 2
b. 5
c. 4
d. 3
Answer  Explanation 

ANSWER: 3

Explanation:
square root and cube root


11)   Which is greatest among the following numbers?
22 , 7 , 23 , 5


a. 7
b. 22
c. 23
d. 5
Answer  Explanation 

ANSWER: 23

Explanation:
square root and cube root


12)   Simplify:
0.72 x 0.72 x 0.72 - 0.39 x 0.39 x 0.39
0.72 x 0.72 + 0.72 x 0.39 + 0.39 x 0.39


a. 0.333
b. 0.33
c. 0.3333
d. 0.3334
Answer  Explanation 

ANSWER: 0.33

Explanation:
simplification


13)   The product of two positive numbers is 4752 and their ratio is 11:12. The smaller of these numbers is

a. 72
b. 60
c. 66
d. 75
Answer  Explanation 

ANSWER: 66

Explanation:
ratio and proportion


14)   Sum of squares of two numbers is 145. If square root of one number is 3, find the other number.

a. 136
b. 9
c. 64
d. 8
Answer  Explanation 

ANSWER: 8

Explanation:
square root and cube root


15)   If a person sells a ‘sari’ for Rs. 5200, making a profit of 30%, then the cost price of the sari is

a. Rs. 4420
b. Rs. 4000
c. Rs. 3900
d. Rs. 3800
Answer  Explanation 

ANSWER: Rs. 4000

Explanation:
profit loss


16)   The ratio of cost price and selling price is 4:5. The profit percent is

a. 10%
b. 20%
c. 25%
d. 30%
Answer  Explanation 

ANSWER: 25%

Explanation:
profit loss


17)   Two bicycles were sold for Rs. 3990 each, gaining 5% on one and losing 5% on the other. The gain or loss percent on the whole transaction is

a. Neither gain nor loss
b. 2.5% gain
c. 2.5% loss
d. 0.25% loss
Answer  Explanation 

ANSWER: 0.25% loss

Explanation:
profit loss


18)   If selling price of 40 articles is equal to cost price of 50 articles, the loss or gain percent is

a. 25% loss
b. 20% loss
c. 25% gain
d. 20% gain
Answer  Explanation 

ANSWER: 25% gain

Explanation:
profit loss


19)   If x:y = 3:4, then (7x+3y):(7x-3y) is equal to

a. 5:2
b. 4:3
c. 11:3
d. 37:19
Answer  Explanation 

ANSWER: 11:3

Explanation:
ratio and proportion