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?

20 %

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40 %

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50 %

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100 %

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Solution

The correct option is C $40 %$
Let the total students be $100$
Given $20 %$ of students are seniors
Then, all senior students attended the play $= 20$
Also, $60 %$ of all students attended the play
Then, no. of students attended the play $= 60$
So, no. of non-seniors attended the play $= 60 - 20 = 40$
Thus, $40 %$ of non-seniors attended the play.

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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?

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?