At Glenridge High School, 20 percent of the students are seniors. If all of the seniors attended the school play, and 60 percent of all the students attended the play, what percent of the non-seniors attended the play?
+1490 At Glenridge High School, 20 percent of the students are seniors. If all of the seniors attended the school play, and 60 percent of all the students attended the play, what percent of the non-seniors attended the play?
This question is very t r i c k y
100% - all students at Glenridge High School
20% - seniors, and all of them attended the play
Out of 80% of non-seniors, only one half of them attended the play.
Answer: 50% of non-seniors attended the play. 
