Question

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

Answer 1

3x+50 i think it sure

Answer 2

Let cost of pen = x
then cost of notebook = 3x
the cost of notebook is thrice a pen
A/q
x = 50
x^3 = 50^3
3x = 150
cost of notebook = 3x
= 150