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

1.	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.
Answer» 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

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.

Answer»

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