13. At the University of Bugelstein you can study Languages, History and Philosophy.
$35 \%$ of students that study a language study English.
$13 \%$ of all the university students study a language other than English.
No student studies more than one language.
What percentage of the university students study Languages?
A $13 \%$
B $20 \%$
C $22 \%$
D $48 \%$
E $65 \%$
13. B English is taken by $35 \%$ of language students, so $65 \%$ of language students don't take English. These are stated as $13 \%$ of the overall university population. So $1 \%$ of the overall university population is the same as $5 \%$ of the language students. Hence $20 \%$ of the university population is $100 \%$ of the language students.