Note that 33 + 29 + 47 = 109, not 100. Her wording makes it sound like they computed from one pool of "very satisfied" people the amount that were single, cohabitating and married, but the numbers in the infographic don't support that interpretation. It looks like instead they separated the groups by gender and status, and then tallied up the number that said they were "very satisfied" which I don't think is vulnerable to your rebuttal.
http://twentysomethingmarriage.org/wp-content/uploads/2013/0...
Note that 33 + 29 + 47 = 109, not 100. Her wording makes it sound like they computed from one pool of "very satisfied" people the amount that were single, cohabitating and married, but the numbers in the infographic don't support that interpretation. It looks like instead they separated the groups by gender and status, and then tallied up the number that said they were "very satisfied" which I don't think is vulnerable to your rebuttal.