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OpenStudy (pythagoras123):
A language school has 100 pupils in which 69% of the pupils study French, 79% study German, 89% study Japanese and 99% study English. Given that at least x% of the students study all four languages, find the value of x.
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OpenStudy (anonymous):
|dw:1334313443600:dw| this is the situation. (I guess...) Maximum value for x would be 69%. Minimum 10%
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