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The cost of ball pen is Rs. 5 less than half of the cost of fountain pen. Write this statement as a linear equation in two variables.

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Let the cost of one fountain pen be Rs. ‘x’ and the cost of one ball pen is Rs. ‘y’ 

Given, 

Cost of ball pen is Rs. 5 less than half of the cost of fountain pen.

⇒ y = (\(\frac{x}{2}\)) – 5 

⇒ 2y = x – 10 

⇒ x – 2y – 10 = 0

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