Question

The cost of a notebook is thrice the cost of a pen.write a linear equation in two variables for this situation.Find the value of the book if the cost of the pen is 50 rupees

Answer 1

Let the cost of a pen be X
and the cost of notebook be Y.

from question
Y=3X
The cost of book=3x
=3* 50
=150 rs.

Answer 2

Answer:

x=3y because the cost of a notebook is x and thrice the cost of thebpen is y so,=3*y=3y x=3y