Like what 07TLX said. That's how they did it on 8th. Everyone sent an email to the Secret Santa coordinator (Santa) to confirm they are doing it followed by a small list of things they like and dislike. Then when the Santa tells a person who they're secret santa to, he also provides the list...
Anyways, I suck at word problems. Help would be greatly appreciated!
For the age group 18 to 25, the fraction of people who used illicit drugs during their lifetime was 3/5 whereas the fraction who used illicit drugs during the past year was 7/20 . What fraction of this population has used...