Question

what is role of chapter: pair of linear equations in Two variables in our daily life

Answer 1

Answer:

In our daily life, we often deal with unknown quantities such as to find the cost of different articles . In such cases, we term the unknown quantities as variables and find the respective values of the variables.

For example:

The cost of a pen is twice the cost of a pencil.

The sum of the cost of a pen and a pencil is Rs 12.

Here, the cost of pen and pencil are unknown quantities, which are to be converted into variables, such as the cost of pen be x and the cost of pencil be y.

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