81)

The ratio of two numbers is 5 ∶ 4 and their HCF is 4. What is their LCM?

SSC CGL 2022

A)

36

B)

48

C)

80

D)

60

82)

Find the mean proportional between 25 and 225.

SSC CGL 2022

A)

75

B)

25

C)

65

D)

85

83)

The ratio of two numbers is 6 ∶ 7 and their HCF is 3. Their LCM is ____ .

SSC CGL 2022

A)

122

B)

128

C)

124

D)

126

84)

The ratio of the present age of father to that of his son is 7 : 2. If after 10 years the ratio of their ages will become 9 : 4, then the present age of the father is:

SSC CGL 2022

A)

37 years

B)

35 years

C)

43 years

D)

40 years

85)

The number of units manufactured by a company A was 12500 units in 2019 and 10625 units in 2020. While in company B, the production fell from 34000 units in 2019 to 30600 units in 2020. If X and Y are the percentage decrease in the number of units manufactured by company A and B respectively from 2019 to 2020, then what will be the ratio of X and Y?

SSC CGL 2022

A)

3 : 2

B)

3 : 4

C)

5 : 3

D)

8 : 5

86)

Salaries of Rida and Riya are in the ratio of 3 : 5, respectively. If the salary of each one is increased by Rs. 5,000, then the new ratio becomes 5 : 7. What is Riya’s present salary?

SSC CGL 2022

A)

Rs. 2,500

B)

Rs. 7,500

C)

Rs. 12,500

D)

Rs. 10,000

87)

If the side of an equilateral triangle is 16 cm, then what is its area?

SSC CGL 2022

A)

\(32\sqrt3 cm^2\)

B)

\(48\sqrt3 cm^2\)

C)

\(81\sqrt3 cm^2\)

D)

\(64\sqrt3 cm^2\)

88)

In a proportion, the 1^st, 2^nd and 4^th terms are 51, 68 and 108, respectively. What is the 3rd term?

SSC CGL 2022

A)

82

B)

83

C)

84

D)

81

89)

X is directly proportional to the square of Y. When X is 12, then Y is 2. Find the value of X when Y is 3.

SSC CGL 2022

A)

27

B)

9

C)

30

D)

18