Question

The cost of 3 pencils and 2 erasers is Rs 12 and the cost of 2 pencils

and 3 erasers is Rs 13. Find the cost of each pencil and each eraser. step by step explanation please​

Answer 1

Step-by-step explanation:

let, cost of pencils be x

cost of eraser be y

by first condition

3x+2y = 12 ....(1)

by second condition

2x+3y = 13 .....(2)

let's add (1) & (2)

3x+2y=12

+

2x+3y = 13

5x+5y= 25

5(x+y) = 25

x+y=5...(3)

let's substract (1) from (2)

2x+3y = 13

-

3x-2y=-12

-x+y= 1

-1(x-y) = 1

x-y = -1....(4)

let's add 3 & 4

x+y= 5

+

x-y= -1

2x = 4

x=2

from equation (3)

x+y=5

2+y=5

y=5-2

y=3

Cost of one pencil is 2 Rs.

Cost of one eraser is 3 Rs.

plz mark as brainlist

Answer 2

Answer:

One pencil will cost 2Rs and One eraser will cost 3 Rs

please mark as brainlist answer