The cost of a book is three times the cost of a note book , write it in equation form using two variables.

The cost of 5 books is Rs. 40. What is the cost of 7 books?

The cost of a note book is twice the cost of a pen. Write a linear equation in two variables to represent this statement.

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

The cost of a notebook is twice the cost of a pen. Write a linear equation in two variables to represent this statement. (Take the cost of a notebook to be Rs. X and that of a pen be Rs. Y).

The cost of a notebook is twice the cost of a pen. Write a linear equation in two variables to represent this statement.(Take the cost of a notebook to be Rs x and that of a pen to be Rs y).

The cost of a notebook is twice the cost of a pen. Write a linear equation in two variables to represent this statement. (Take the cost of a notebook to be x and that of a pen to be y).

The cost of a notebook is twice the cost of a pen.Write a linear equation in two variables to represent this statement.(Take the cost of a notebook to be Rs x and that of a pen to be Rs y).

The cost of a notebook is twice the cost of a pen.Write a linear equation in two variables to represent this statement.(Take the cost of a notebook to be x and that of a pen to be? y).