Question

the cost of a book is Rs20 more than twice the cost of a pen.Express this statement as a linear equation

Answer 1

Hey the answer is....

Let the cost of pen be x rupees.

Then twice the cost of pen = 2 ☓ x rs.

Twice the cost of pen = 2x rupres.

So,

Cost of book = rs 20 more than twice the cost of pen

Cost of book = rs 2x + 20

The eq is 2x + 20

Answer 2

Answer:

The linear equation for the given statement is $2x-y+20=0$.

Step-by-step explanation:

Given the cost of a book = Rs20 more than twice the cost of a pen.

Let the cost of pen be $x$ .

Then twice the cost of pen $= 2 x$

Let the cost of book be y

Given the cost of a book = Rs20 more than twice the cost of a pen.

Therefore cost of book,  $y=20 +2x$

Rearranging the terms, $2x-y +20=0$

Therefore, the linear equation form of the given statement is $2x-y+20=0$