Question

A ski shop owner surveys 200 people who ski or snowboard. If 196 people ski and 154 people do both activities, how many people snowboard?

Answer 1

If 154 people do both activities, then 196-154=42 people ski but don't snowboard.

If 42 people don't snowboard, then 200-42=158 people snowboard.

Answer 2

200 - 196(ski) = 4 snowboard

196(ski) - 154(both) = 42 ski

154(both) - 42(ski) = 112 snowboard

112 + 4 = 116 snowboard

The answer is 116 ... I think...