1."I'll have it," said Jack, grabbing the book. "I'm twice as old as you were when I was as old as you are." Jill wasn't going to fight. "It's kid stuff anyway," she told him. "But I'm twice as old as you were when you were six years younger than I am now." How old was Jack?

Jack 16 years (Jill 12)

Jack 14 years (Jill 6)

Jack 12 years (Jill 8)