Question

the cost of a notebook is twice, the cost of a pen. Write a linear equation in two variable to represent this statement.​

Answer 1

cost of notebook= x

cost of pen= y

x= 2y

Answer 2

Let the cost of the pen be 'x' .

And let the cost of the notebook be 'y'.

According to the question ,

cost of the notebook is '2x'.

Hence , the linear equation is :

y = 2x .

i.e. y - 2x = 0.

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