Felix and Melanie enjoy jogging. The speed of Melanie is 1 mile per hour faster than the speed of Felix. In the time that it takes Melanie to run 12 miles, Felix runs 10 miles. Find the speed of each runner.

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