Mathematics, 06.01.2020 20:31 khan2491

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

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

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Another question on Mathematics

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