Question

The cost of $2$ pencils is same as the cost of $5$ erasers. Express the statement as a linear equation in two variables.

Answer 1

Cost of $2$ pencils=Cost of $5$ erasers

Let the cost of each pencil be $x$

and the cost of each eraser be $y$

$\therefore 2\times x=5\times y$

$\Rightarrow 2x=5y$

$\Rightarrow 2x-5y=0$

Hence, the required equation is $2x-5y=0$