pencils come in a package of 10. Eraser come in a package of 12. Philip wants to purchase the smallest amount of pencil and eraser so that he'll have exactly 1 eraser per pencil how many packages of pencils and erasers should Phillip buy.
Phillip should buy 5 packages of erasers so he will have 60 of them. Then he should buy six packs of pencils so he will have 60 of both pencils and erasers