Mathematics, 18.09.2019 19:30 tre9990

One hundred students were surveyed about whether they prefer snapchat or instagram. out of the 50 boys surveyed there were 40 boys who preferred instagram. out of the 50 there were 30 girls who preferred snapchat. assuming that all students have a preference how many girls preferred instagram?

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One hundred students were surveyed about whether they prefer snapchat or instagram. out of the 50 bo...

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