Question

1. The cost of a notebook is twice the cost of a pen. Write a linear
variables to represent this statement
Take the cost of a notebook to be and that of a pen to be​

Answer 1

Answer:

Let the price of the pen be x as all the items have a price in terms of the price of the pen.

Since the price of the notebook is twice the price of the pen, we formulate the expression 2 * x = 2x

It was easy

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Answer 2

Let the cost of a notebook to be = ₹ x

Let the cost of a pen to be = ₹ y

According to the question,

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

i.e., Cost of a notebook = 2×Cost of a pen

$→x = 2y$

$→x - 2y = 0$

x-2y = 0 is the linear equation in two variables yo represent the statement 'The cost of a notebook is twice the cost of a pen'.