Question

The cost of notebook is twice the cost of a pen. Write a Liner equstion in two variable to represent this statement. (Take the cost of notebook to be ₹ x and that of pen to be ₹ y).​

Answer 1

Answer:

let cost of notebook-x RS

cost of pen - y RS

so

cost of note book is twice of cost of a pen

x = 2y

Answer 2

let the cost of a n.b be ₹x

cost of a pen be ₹y

twice the cost of pen be 2y

so,2y=x is the linear eq.in two variables