Question

the cost of pen is thrice the cost of book write a linear equation in two variable to represent this statement​

Answer 1

Answer:

Let us assume that the cost of one pen is 'x'.

Let us assume  that the cost of one book is 'y'.

Then,according to the question the equation will be

3x = y

Answer 2

Answer:

3y=x

Step-by-step explanation:

Let's take x as the cost of pen

x => pen's coat

then,

Let's take y as cost of book

as the book's cost is thrice the cost of pen then,

3y