A store buys box of pencils for $0,50. In order to make a profit they are going to markup the cost of pencils by 125%. Find the amount of markup.

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years