Okay so here how i solve it
all 3 of them make a cost of P42
So in order to solve it divide 42 by 3
42/3 = 14
Pencil = 14
Paper = 14
Eraser = 14
The paper cost "P5" more than the eraser
All you need to do is add 5 on the paper and minus 5 on the eraser.
Paper =19
Eraser = 9
Pencil = 14
Then the pencil costs "P2" more than the paper
Add 2 pesos on the pencil
Pencil= 16
then minus 2 on the paper
Paper =17
So that makes them
Pencil = 16
Paper=17
Eraser =9
________
total : P42.00
So that makes the answer
the answer is => Pencil = P16
Paper=P17
Eraser = P9