Sean W. answered 01/21/17
Tutor
5.0
(50)
Biomedical Engineer from Vanderbilt
Hi Maxiee,
Let's first organize this problem. There are 20 total dancers and 3 dancers who are juniors. From this given information, we can determine that there are 20 - 3 = 17 dancers who are NOT juniors.
So the fraction of dancers who are not juniors is 17 / 20, where there are 17 dancers who are not juniors and 20 total dancers.
Hope this helps!