Question

In a store, pencils have one price and pens have another. 3 Pencils and 2 pens cost 78 cents. 2 pencils and 3 pens cost 72 cents. How much does 1 pencil and 1 pen cost?
Help! I don't get this.

Answer 1

It is actually a question i need to answer.

Answer 2

let x = cost of one pencil
let y = cost of one pen

3x + 2y = 78
2 x + 3y = 72

Multiply first equation by 2
and second equation by 3

2(3x + 2y) = 156
3(2x + 3y) = 216

then subtract one of the new equations from the other new equation. This will enable you to solve for y. etc.....

Answer 3

12

Answer 4

I have no idea

Answer 5

maybe twelve