Exactly one activity: 246 None of the activities : 1 At least one activity: 74 Snowboarding and Ice skating but not skiing: 5 Snowboarding or ice skating but not skiing: 132. Only skiing : 119. The diagram is in the attachment.
Im pretty sure the answer is .52 I got this by subtracting the toatl by the sales tax and then dividing that total by how many pencils were bought : 6.70-.42=6.24, 6.24/12=54