Question

Two pencils and one eraser cost Rs. 35 and 3 pencils and four
erasers cost Rs. 65. Find the cost of a pencil and eraser separately.

Answer 1

Answer:

Cost of pencil is 15rs and eraser is 5rs. The pencil is expensive if you ask me

Step-by-step explanation:

let no. of pencil be x and no. of eraser be y

such that

2x+y=35-----(1)

3x+4y=65-----(2)

multiply (1) by 3 and (2) by -2

6x+3y=105

-6x-8y= -130

___________

-5y= -25

y= 5

substitute y=5 in (1)

2x+5=35

2x=30

x=15