Maths · Union, intersection and complement of sets and their algebraic properties
At a school, of the students are seniors. If all of the seniors attended the sch
At a school, \( 20 \% \) of the students are seniors. If all of the seniors attended the school play, and \( 60 \% \) of all the students attended the play, then what percent of the non-seniors attended the play?
- A. \( 20 \% \)
- B. \( 40 \% \)
- C. 50 \% \)
- D. \( 100 \% \)
Step-by-step solution
Let total students = 100. Seniors = 20, all attend. Total attendees = 60. Non-seniors attending = 60 - 20 = 40. Non-seniors total = 80. Percentage = (40/80)*100 = 50%.
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