A wooden door stopper needs to be covered with stickers to match the door from the directing contest if one package of stickers covers a surface area of 75 cm². How many packages of stickers needed to be purchased

If the wooden door stopper has a surface area of 150 cm² (assuming both sides need to be covered), then it will require 2 packages of stickers to cover the entire surface area (150 cm² / 75 cm² per package = 2 packages).