Question

A clerk bought 8 pens and 2 note books for Rs.80 for his office and 8 note books and 2 pens for Rs.125 for his school going daughter.Express the above data in a pair of linear equation in two variables?

Answer 1

Let the cost of one notebook be x and cost of one pen be y

cost of 8 pens=8y

cost of 2 notebook=2x

total cost =80

2x+8y=80.....(1)

Now cost of 2 pens=2y

cost of 8 notebooks=8x

total cost=125

8x+2y=125......(2)

These are the two equations in two variables.

Your answer:(1) and (2)

Answer 2

Here is the answer

Let the cost of pen be 'x'

Let the cost of Notebook be 'y'

As per the question,

A clerk bought 8 pens and 2 note books for Rs 80.

$\therefore8x + 2y = 80....eq.\: 1$
This is the first equation.

Now,

Hebought 8 notebooks and 2 pens for his daughter for Rs.125

$\therefore2x + 8y = 125...eq.2$

This is the 2nd Equation.

Therefore , we got the above two equations.

#BeBrainly..!