Posted by pleasehelp on .
the ratio of juniors to seniors is 9 to 8, if there are 51 juniors and seniors total, which percent of students are seniors?
how do i figure this out?!

geometry 
Reiny,
We don't even need the 51
Can you see how 9/17 of the students are juniors and 8/17 are seniors?
8/17 = .470588
so 47.1% are seniors