The cost of a notebook is twice the cost of a pen. Write a linear equation in two variables to represent this statement.
The cost of a notebook is twice the cost of a pen. Write a linear equation in two variables to represent this statement.
(Take the cost of a notebook to be x and that of a pen to be y).
Answer
Let the cost of pen be y and the cost of notebook be x.
A/q,
Cost of a notebook = twice the pen = 2y.
∴2y = x
⇒ x - 2y = 0
This is a linear equation in two variables to represent this statement.
