A box has 5 CDs and 10 DVDs. You pick out one disc. What is the chance it is a CD?
Huh
I think you got confused anon
5+10=15
so the chance of it being a CD is 5/15 or 1/3
1/4 or 25%. The reason for that is because there are 5 cd's and 10 dvd's so add them up, and you get 15. and the probabability of it being a cd is 25%
1/4 or 25%.