- What is algebraic expression
- |
- What is algebraic equation
- |
- What is Linear equation in one Variable
- |
- Solving Equations which have Linear Expressions on one Side and Numbers on the other Side
- |
- Word Problem
- |
- Solving Equations having the Variable on both Sides
- |
- Reducing Equations to Simpler Form
- |
- Equations Reducible to the Linear Form

In this page we have *NCERT Solutions for Class 8 maths - Linear equation in One Variable Chapter 2 * for
Exercise 2.4 . Hope you like them and do not forget to like , social share
and comment at the end of the page.

According to the given question,

8(x-5/2) = 3

8

Transposing 3

8

5

Dividing both sides by 5, we obtain

Hence, the number is 4.

21 + 5

21 + 5

Transposing 2

5

3

Dividing both sides by 3, we obtain

5

Hence, the numbers are 7 and 35 respectively.

Therefore, original number = 10

On interchanging the digits, the digits at ones place and tens place will be

Therefore, new number after interchanging the digits = 10(9 −

= 90 − 10

= 90 − 9

As per question,

New number = Original number + 27

90 − 9

90 − 9

Transposing 9

90 − 36 = 18

54 = 18

Dividing both sides by 18, we obtain

3 =

Hence, the digits at tens place and ones place of the number are 3 and 6 respectively.

Therefore, the two-digit number is 36

Therefore, original number = 10

On interchanging the digits, the digits at ones place and tens place will be

Number after interchanging = 10 × 3

According to the given question,

Original number + New number = 88

13

44

Dividing both sides by 44, we obtain

Therefore, original number = 13

By considering the tens place and ones place as 3

Therefore, the two-digit number may be 26 or 62.

According to the given question,

(x+5)=6x/3

Transposing

5 = 2

5 =

6

Therefore, the present ages of Shobo and Shobo’s mother will be 5 years and 30 years respectively.

Perimeter of the plot = 2(Length + Breadth) It is given that the cost of fencing the plot at the rate of Rs 100 per metre is Rs 75, 000.

So

100 × Perimeter = 75000

100 × 30

3000

Dividing both sides by 3000

Length = 11

Breadth = 4

Hence, the dimensions of the plot are 275 m and 100 m respectively.

Per metre selling price of trouser material =Original Price + Profit

=90 + 12% Profit

=90 + 12X90/100

=Rs 100.80

Per metre selling price of shirt material

=Original Price + Profit

=50 + 10% Profit

=50 + 10X50/100

=Rs 55

We know from question that total amount of selling = Rs 36660,So

100.80 × (2

201.60

366.60

Dividing both sides by 366.60

Trouser material = 2

Number of deer grazing in the field = x/2

So remaining would be x/2

Now Number of Deer playing near by= (3/4)(x/2)= 3x/8

Number of deer drinking water from the pond = 9

So

Multiplying both sides by 8, we obtain

Hence, the total number of deer in the herd is 72.

10

According to the question,

Grandfather’s age = Granddaughter’s age + 54 years

10

Transposing

10

9

Granddaughter’s age

Grandfather’s age = 10

Aman’s age is three times his son’s age. Ten years ago he was five times his son’s age. Find their present ages.

According to the question,

10 years ago, Aman’s age = 5 × Aman’s son’s age 10 years ago

3

3

Transposing 3

50 − 10 = 5

40 = 2

Dividing both sides by 2, we obtain

20 =

Aman’s son’s age =

Aman’s age = 3

Download NCERT Solutions Linear equation Exercise 2.4 as pdf

Class 8 Maths Class 8 Science

Given below are the links of some of the reference books for class 8 Math.

- Mathematics Foundation Course for JEE/Olympiad : Class 8 This book can take students maths skills further. Only buy if child is interested in Olympiad/JEE foundation courses.
- Mathematics for Class 8 by R S Aggarwal Detailed Mathematics book to clear basics and concepts. I would say it is a must have book for class 8 student.
- Pearson Foundation Series (IIT -JEE / NEET) Physics, Chemistry, Maths & Biology for Class 8 (Main Books) | PCMB Combo : These set of books could help your child if he aims to get extra knowledge of science and maths. These would be helpful if child wants to prepare for competitive exams like JEE/NEET. Only buy if you can provide help to the child while studying.
- Reasoning Olympiad Workbook - Class 8 :- Reasoning helps sharpen the mind of child. I would recommend students practicing reasoning even though they are not appearing for Olympiad.

You can use above books for extra knowledge and practicing different questions.

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