Waec Model Questions Vol1 2018 Civic Education Question 11
Practice objective / multiple choice question 11 from the 2018 Waec Model Questions Vol1 Civic Education examination.
In a survey of secondary school students, 30% reported using cannabis, 20% reported using inhalants, and 10% reported using both cannabis and inhalants. Among all cannabis users, 40% also used alcohol, and among all inhalant users, 25% also used alcohol. No student used all three substances simultaneously. If 35% of the students used alcohol (including any combination), what percentage of students used only alcohol (i.e., did not use cannabis nor inhalants)?
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About This Question
This is Waec Model Questions Vol1 2018 Civic Education Question 11. It is one of the objective questions from the 2018 Waec Model Questions Vol1 Civic Education examination.
Difficulty level: Hard .
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