Question

An anonymous survey of college students was taken to determine behaviors regarding alcohol, cigarettes, and illegal drugs. The results were as follows: 866 drankalcohol regularly, 644 smoked cigarettes, 198 used illegal drugs, 408 drank alcohol regularly and smoked cigarettes, 106 drank alcohol regularly and used illegal drugs,113 smoked cigarettes and used illegal drugs, 90 engaged in all three behaviors, and 279 engaged in none of these behaviors.a) how many students were surveyed?

Answer 1

In order to determine the number of students surveyed, we will count the number of students in each sub-group.

Students that did not engage: 279

All three behaviours: 90

113 smoked cigrarettes and used illegal drugs: