Question

8. The cost of a table is 25 rupees more than twice the cost of a chair.
Write a linear equation in two variables to represent this statement
(Take the cost of a table to be Rs x and that of a chair to be Rs y). Also
find one solution of this equation.​

Answer 1

Answer:

Let the cost of a notebook be Rs. x and that of a pen be Rs. y.

Given the cost of a notebook is twice the cost of a pen.

Then x=2y

or, x−2y=0.

This is the required linear equation in two variable.

Answered

Answer 2

Answer:

Required equation is x-2y-25=0

solution of this equation is x= -5 y= -15

Step-by-step explanation:

let the cost of table=x

cost of chair=y

According to Question:-

x=2y+25

x-2y-25=0

taking x= -5 & y= -15 putting in above equation

(-5)-2(-15)-25=0

L.H.S= -5+30-25

= -30+30

=0

=R.H.S