Question

Maths question class. 9th. the cost of pen is rs 10 less than twice that of notebook . write a linear equation in two variables to represent this statement

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Answer 1

Explanation:

Let the cost of a notebook be x. Then, the cost of a pen is 2x - 10. Therefore, the linear equation in two variables to represent this statement is: cost of pen = 2(cost of notebook) - 10, or y = 2x - 10.