User blog comment:AchieverBeaver88/Math probelms./@comment-1781822-20100921122315

She was 8. Duh!

There's a 7-year age difference between the two, so when he's 35, she'll be 28, so when he was 15, she was 7 years younger than him, which is 8.

Also, that first question is too easy. 99 - 11 - 13 - 8 + 7 = 74.

Also, that was like, a month ago, so why'd you only bring it up now?