Question

The cost of two pencils and 3 rubbers is 9rupee.and cost of 2pen and 6 rubbers is 12 ruppes . Find the cost of each pencil and rubber by elimination method

Answer 1

Answer:

let the cost of pencil =X

let the cost of rubber=y

2x+3y=9

and

2x+6y=12

by elimination method

2x+3y=9-(2x+6y=12)

then y=1

put the value of y in equation 1 i.e 2x+3y=9

2x=9-3

2x=6

X=3

hope it helps you

Answer 2

Answer:

let the cost of pencil be X

let the cost of rubber be Y

2x+3y=9

2x+6y=12

by elimination method

-3y=-3

y=1

put the value of y in equation

2x+3(1)=9

2x=9-3

2x=6

X=3

therefore cost of each pencil is ₹3

cost of each rubber is ₹1