Question

The cost of a notebook is twice the cost of a pen. Write a linear equationin two variable to represent this statement​

Answer 1

Answer:

3x

Step-by-step explanation:

let the pen is x

notebook is 2x

2x+x=3x

Answer 2

Answer:

x−2y=0.

Step-by-step explanation:

Let the cost of a notebook = Rs. x

and the cost of a pen = Rs. y

According to the condition,

[Cost of a notebook] =2 x [Cost of a pen]

x = 2y

or, x – 2y = 0

Thus, the required linear equation is x – 2y = 0.