Being very frugal, how much would you say it takes to provide for a 16 year old boy on a weekly basis?

The first thing that went thru my mind was 

Hundreds of dollars and ALL your common cents. Ha 

But iv raised 3 children so i know there isn't a pat answer, Each child has different needs and interest, and issues. two of my three were content with the normal everyday life way of life. My middle child was expensive because of all the activities and social events she participated in, she cost us more. Iv always said I wanted my children to have it as good as i did. But if i could i want them to have it better than i did. And i had it good. not real good, but good none the less.