Chapter 3 - Solving Inequalities - 3-8 Unions and Intersections of Sets - Practice and Problem-Solving Exercises - Page 219: 26

158 people

Let A = people who ski and B = people who snowboard The intersection of A and B represents people who do both activities: 154 The number of people who only ski: $196-154=42$ The total number of people is 200. Subtract to find the number of people who just snowboard: $200-196=4$ The number of people who snowboard is: $154+4=158$