A certain high school offers two foreign languages, Spanish and French. 10% of students do not take a foreign language

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A certain high school offers two foreign languages, Spanish and French. 10% of students do not take a foreign language class, and 70% of students take exactly one foreign language class. If half of all students are in a French class and 50 students take classes in both languages, how many students are in a Spanish class?

(A) 100
(B) 150
(C) 200
(D) 240
(E) 250

[spoiler]OA=B[/spoiler]

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