Question

Express the following statement as a linear equation in two variables "The cost of a pencil is ₹2 And a ball point pen is₹15 Sheela pays ₹ 100 for the pencils and pens she purchased"

Answer 1

Answer:

2x + 15y + 100

Step-by-step explanation:

We have-

Cost of a pencil = 2 Rs

Cost of a ball pen = 15 Rs

According to question- Sheela pays 100 rs for pens and ball pen

Let Sheela bought x pencils and y ball pen

Then the rate of x pencils = x × rate of one pencil

                                          = x × 2

                                         = 2x Rs

The rate of y ball pens = y × rate of one ball pens

                                     = y  × 15

                                     =  15y Rs

Total money spends by Sheela = 100 Rs

Now linear equation is -

Rate of total pencils + Rate of total ball pens = Total money

2x + 15y = 100