What percentage of these students drink coffee or smoke

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A survey of women students at a college showed that 15% smoke cigarettes, 40% drink coffee, and 5% both smoke cigarettes and drink coffee.

(a) What percentage of these students drink coffee or smoke cigarettes?

(b) What percentage of these students drink coffee but smoke cigarettes?

(c) What percentage of these students neither drink coffee nor smoke cigarettes?

Reference no: EM13633750

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