Question

1. The cost of a notebook is twice the cost of a pen. Write a linear equation in two
variables to represent this statement.​

Answer 1

Answer:

If pen = x

and notebook = y

2x=y

Follow if you find helpful

Answer 2

Answer:

x=30

y=15

Step-by-step explanation:

let the cost of book = x

which is twice of the pen`s cost

and let cost of pen= y

as per question

-------. .--------

2y=x

means ------

(cost of 2 pens = cost of one notebook)

= 2y=30 and x=30

means 2 pens ,cost = 1 notebook, cost