Question

pls tell the answer​

Answer 1

Answer:

2x - y + 10 = 0

step by step explanation :

Let cost of a ball pen = x

Let cost of a ball pen = xand cost of a fountain pen = y

According to the question,

According to the question,cost of a ball pen=half of the cost of a fountain pen -

According to the question,cost of a ball pen=half of the cost of a fountain pen -Y-5

According to the question,cost of a ball pen=half of the cost of a fountain pen -Y-52

According to the question,cost of a ball pen=half of the cost of a fountain pen -Y-52y-10

According to the question,cost of a ball pen=half of the cost of a fountain pen -Y-52y-102

According to the question,cost of a ball pen=half of the cost of a fountain pen -Y-52y-1022x = y-10

According to the question,cost of a ball pen=half of the cost of a fountain pen -Y-52y-1022x = y-102x - y + 10 = 0

According to the question,cost of a ball pen=half of the cost of a fountain pen -Y-52y-1022x = y-102x - y + 10 = 0which is the required linear equation in two variables.