Fresh and invigorated after completing her algebra homework, Nicole appeared at the living room door. She had a piece of paper covered in scribbled numbers, m's, d's, and equations. "Dad," she announced. "Five years from now you'll be only double my "Amazing!" Dad almost looked up from the TV but knew she hadn't finished. "But five years ago, you were triple age then!" "I suppose in another ten years we'll be the same age," Dad grunted changing channels. How old is Nicole?