CBSE Class 8 Maths – Linear Equation Examples

Ques 1: Solve:4x+9=10

Solution: 4x+9=10
Transpose 9 from L.H.S to R.H.S
4x=10-9
⇒4x=1
⇒x=1/4

Ques 2: The perimeter of a rectangular swimming pool is 160 m. Its length is 5 m more than twice its breadth. Find the dimensions of the pool.

Solution:

Let the breadth of the swimming pool be m
As the length of the swimming pool is 5 m more than twice its breadth,
Length of the swimming pool 2x+5

Area of the swimming pool = 2(Length+ Breadth)
=2(2x+5+x)
=2(3x+5)
=6x+10

Also,
The perimeter of a rectangular swimming pool 160 m

So,
6x+10=160
⇒6x=160-10=150
⇒6x=150
⇒x=150/6=25

So,
The breadth of the swimming pool=25 m
Length of the swimming pool=2(25)+5=55 m

Click to know more about Linear Equations for class 8 Maths

Visit Takshila Learning, for Online Tuition Classes for Class 8 Maths and other subjects.

Comments

Lessons-Worksheets-Question Papers-CBSE Class 2 English

Lessons-Worksheets-Question Papers-CBSE Class 2 English CBSE 2nd Class English – One and Many In this blog, we share the spelling rules used in the concept of One and Many. When there is only one of a naming word (noun), it is said to be a singular noun . When a noun shows more than one, it is said to be in the plural . We can add –S, -es, -ves or ies to show that there is more than one noun. For example, we say many birds, four biscuits, six brushes. But for the students of Class 2 , it’s very difficult and confusing to understand where to use s , es, ves or ies in the form of many. Don’t worry, it looks difficult, but it is very easy as in grammar each concept has a set of rules that need to practice. Noun ending with –s, -x, -o, -sh, -ch, and –ss form plurals by taking –es. Look at these pairs of words: Bus – Buses Brush – Brushes Continue ..... Click here ...

Magnetic and non-magnetic material Class 6 Science

Magnetic and non-magnetic material Class 6 Science A magnet is a substance that is drawn to certain magnetic materials like iron, cobalt, and nickel. Magnets have the ability to draw iron to them. Natural magnets are rocks that naturally draw iron. Non-magnetic materials include things like wood, rubber, coins, feathers, leather, etc. that are not drawn to iron. Magnet characteristics It pulls magnetic materials, such as iron. The magnet's two ends are referred to as its poles. The magnet's diametrically opposed poles are drawn together. Heating, hammering, or dropping causes it to lose its characteristics. On the basis of properties types of Magnets Temporary magnets are those magnets that are magnetic for only a little duration. Typically, iron, cobalt, or nickel are used to make them. When they are close to the powerful magnet, they act like a magnet. When they are yanked away from the powerful magnet, they stop being magnetic. Permanent magnets are magnets that have magne...

Class 3 English Practice Grammar Worksheet -The Adverb

Class 3 English Practice Grammar Worksheet -The Adverb Class 3 English – The Adverb – Kinds of Adverb Fill in the blanks with suitable Adverbs of place. Choose from the box. Up outside everywhere back down away here there ...

Takshila Learning - Online Tutorials

Search This Blog