Question

The cost of a note book is twice the cost of a pen. Write a linear equation in two variable to represent this statement (cost of note book to be Rs x and that of a pen to be Rs Y)​

Answer 1

Let the cost of a notebook be Rs. x and that of a pen be Rs. y.

Given the cost of a notebook is twice the cost of a pen.

Then x=2y

or, x−2y=0.

This is the required linear equation in two variable.