Please Help, I have a ratio problem I can't solve
An Arnold Palmer is a half lemonade, half iced tea mix. Maggie is trying to make herself an Arnold Palmer, but she likes hers to be 2/3 lemonade and 1/3 iced tea. She currently has a 22 oz of 50-50 mixed Arnold Palmer. How much lemonade does she need to get her 2/3 lemonade desired mix if she wants to have a 36 oz Arnold Palmer at the end?