Question

cost of pencil is 3 times the cost of an eraser.Represent this in the form of a linear equation in two variables.Also find four solutions of the above question.

Answer 1

cost of the pencil=y
cost of the eraser=x
3x=y..

1.if x=1.then y=3
2. if x=2 then y=6
3.if x= 10 then y=30
4. if x=100 then y=300

Answer 2

Let the cost of an eraser be x and that of a pencil be y .So according to question we have 3x = y
Solutions of the equation :
i) x=1 ; y=3
ii) x=2 ; y=6
iii) x=3 ; y=9
iv) x=4 ; y=12

Hope that helps !!