Express statements as a linear equation in two variables : The cost o

1.	Express statements as a linear equation in two variables : The cost of a pencil is ₹2 and one ball point pen costs ₹15. Sheela pays ₹100 for the pencils and pens she purchased.
Answer» Given: that cost of a pencil = ₹2 Cost of a ball point pen = ₹15 Let the number of pencils purchased = x Let the number of pens purchased = y Then the total cost of x – pencils = 2x Then the total cost of y – pens = 15y By problem 2x + 15y = 100

Express statements as a linear equation in two variables : The cost of a pencil is ₹2 and one ball point pen costs ₹15. Sheela pays ₹100 for the pencils and pens she purchased.

Answer»

Given: that cost of a pencil = ₹2

Cost of a ball point pen = ₹15

Let the number of pencils purchased = x

Let the number of pens purchased = y

Then the total cost of x – pencils = 2x

Then the total cost of y – pens = 15y

By problem 2x + 15y = 100