# MCQ Questions for Class 8 Maths Chapter 2 Linear Equations in One Variable with Answers

Free PDF Download of CBSE Maths Multiple Choice Questions for Class8 with Answers Chapter 2 Linear Equations in One Variable. Maths MCQs for Class 8 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 8 Maths Linear Equations in One Variable MCQs Pdf with Answers to know their preparation level.

## Linear Equations in One Variable Class 8 Maths MCQs Pdf

1. Which of the following is not a linear equation in one variable?
a) 33
b) 33(x+y)
c) 33x
d) 33y

Explanation: In 33(x+y), x and y are two variables.

2. The solution of 2x-3=7 is:
a) 5
b) 7
c) 12
d) 11

Explanation: 2x-3=7

2x=7+3=10

x=10/2 = 5

3. The solution of 2y + 9 = 4 is:
a) 9/2
b) 4/9
c) -⅖
d) -5/2

Explanation: 2y+9 = 4

2y = 4-9 = -5

y=-5/2

4. The solution of y/5 = 10 is:
a) 15
b) 10
c) 50
d) 5

Explanation: y/5 = 10

y = 5×10 = 50

5. What should be added to -7/3 to get 3/7?
a) 21/58
b) 58/21
c) 47/21
d) 50/21

Explanation: Let the number be x

-7/3+x = 3/7

x=3/7+7/3 = (9+49)/21 = 58/21

6. The perimeter of rectangle is 20cm. If the length of rectangle is 6cm, then its breadth will be:
a) 4 cm
b) 6 cm
c) 10 cm
d) 14 cm

Explanation: Perimeter of rectangle = 2(Length+Breadth)

20 = 2(6+x)

6+x = 20/2

6+x = 10

x = 10-6

x=4 cm

7. The age of father is three times the age of son. If the age of son is 15 years old, then the age of father is:
a) 50 years
b) 55 years
c) 40 years
d) 45 years

Explanation: Let age of the father is x

Given: x = 3 × (age of son) = 3 × (15) = 45 years

8. The difference between two whole numbers is 66. The ratio of the two numbers is 2 : 5. The two numbers are:
a) 60 and 6
b) 100 and 33
c) 110 and 44
d) 99 and 33

Explanation: Let the two numbers be 2x and 5x since they are in the ratio of 2:5.

The difference between 5x and 2x = 66

5x – 2x = 66

3x = 66

x = 22

Hence, 2x = 2(22) = 44 and 5x = 5(22) = 110.

9. Three consecutive integers add up to 51. The integers are:
a) 16,17,18
b) 15,16,17
c) 17,18,19
d) 18,19,20

Explanation: Let the three consecutive integers be x, x+1, x+2

x+(x+1)+(x+2) = 51

3x+3 = 51

3x = 51 – 3

x = 48/3 = 16

x+1 = 16+1=17

x+2 = x+2 = 18

10. The solution for 3m = 5m – (8/5) is:
a) 8/5
b) ⅘
c) 5/4
d) 4/3