Quant Quiz

Q1)-The difference between a number and its three-fifth is 50. What is the number ?

75

100

125

None of these

Ans.- C
Let the number be x. Then , x - 3/5x = 50
x = (50 x 5 ) / 2 = 125

Q2)-If a number is decreased by 4 and divided by 6 , the result is 8. What would be the result if 2 is subtracted from the number and then it is divided by 5 ?

9 (2/3)

10

10 ( 1/5 )

11 (1/5)

Ans.- B
Let the number be x. Then , ( x -4 ) /6 = 8
x = 52.
(x - 2) / 5 = ( 52 - 2 ) / 5 = 50 / 5 = 10

Q3)-If one-third of one-fourth of a number is 15 , then three-tenth of that number is

35

36

45

54

Ans.- D
Let the number be x . Then , 1/3 of 1/4 of x = 15
x = 15 x 12 = 180
So , required number = ( 3/10 x 180 ) =54

Q4)-A number is doubled and 9 is added. If the resultant is trebled, it becomes 75. What is that number ?

3.5

6

8

None of these

Ans.- C
Let the number be x. Then , 3(2x+9)=75
2x + 9 = 25
2x = 16
x = 8

Q5)-Three-fourth of a number is 60 more than its one-third. The number is

84

108

144

None of these

Ans.- C
Let the number be x. Then 3/4 x - 1/3 x =60
5x/12 = 60
x = 144

Q6)-When 24 is subtracted from a number , it reduces to its four-seventh. What is the sum of the digits of that number ?

1

9

11

Data inadequate

Ans.- C
Let the number be x. Then , x - 24 = 4/7x
3/7 x = 24
x = (24 x 7 ) /3 = 56
Sum of the digits = ( 5 + 6 ) =11

Q7)-Find the number which when multiplied by 15 is increased by 196.

14

20

26

28

Ans.- A
Let the number be x. Then , 15x - x = 196
14x = 196
x =14

Q8)-If a number , when divided by 4 , is reduced by 21, the number is

18

20

28

38

Ans.- C
Let the number be x. Then x/4 = x-21
x = 4x -84
3x =84
x = 28

Q9)-A number whose fifth part increased by 4 is equal to its fourth part diminished by 10 , is

240

260

270

280

Ans.- D
Let the number be x. Then, ( 1/5 x + 4) = ( 1/4 x - 10 )
x/20 = 14
x = 280

Q10)-The difference of two numbers is 20 % of the larger number. If the smaller number is 12, the larger one is

15

16

18

20

Ans.- A
Let the larger number be x. Then , x - 12 = 20 % of x
x - x/5 = 12
x = (12 x 5 ) / 4 = 15