Question

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

Answer 1

let the cost of 1 pencil be RS x and the the cost of one ball point pen be Rs y so
cost of 2 pencil is 2x and one ball point be y so equation is 2x+y= 100

Answer 2

Answer:

The linear equation in two variable is $2x+15y=100$

Step-by-step explanation:

Given : The cost of a pencil is Rs.2 and one ball point pen costs Rs.15. Sheela pays Rs.100 for the pencils and pens she purchased.

To find : Express the given statement as a linear equation in two variables ?

Solution :

Let the number of pencil be 'x'.

The cost of a pencil is Rs.2.

The cost of x pencil is Rs.2x

Let the number of ball point pen be 'y'.

The cost of a ball point pen is Rs.15.

The cost of y ball point pen is Rs.15y

Total cost of  pencils and pens she purchased is Rs.100

So, The required equation form is $2x+15y=100$

Therefore, The linear equation in two variable is $2x+15y=100$