Question

the total cost of 3 pens and 4 notebooks is rate 32. if the cost of a notebook is rate .1 more than the cost of a pen, find the cost of each.​

Answer 1

Step-by-step explanation:

Let the cost of the pen be x rupees.

And that of notebook be y rupees.

Then the equations formed are

3x+4y=32.......1

&y-x=1

-x+y=1.........2

Multiply eq.(2) by 3

3(-x+y=1)

-3x+3y=3.........3

Adding eq.(1) & eq.(2)

We get

7y=35

y=35÷7

y=5

Putting value of y=5 in eq.(2)

-x+5=1

-x=1-5

-x=-4

x=4

So,the cost of a pen is ₹4 and that of notebook is ₹5.