Question

A pen costs 5 times the price of an eraser. If 3 pens and 5 erasers cost ₹ 40, how much does a pen and an eraser cost?

Answer 1

Step-by-step explanation:

Let the cost of a pen be x

And the cost of an eraser be y

Pen cost is 5times the cost of eraser

= > x= 5y

x-5y= 0........ Eq 1

And 3pens and 5 erasers is 40

3x+5y= 40................. Eq 2

Eq 1+2

x-5y+3x+5y= 40

4x= 40

x = 40/4

x= 10

Pen cost is 10 rs

And eraser cost (y) = x/5

= 10/5

y=2