John is talking to Mary while working on a deal book at 2AM. Mary learns that Johnâ€™s sister has three children. â€œHow old are the children?â€ asks Mark. â€œWell,â€ replies John, â€œthe product of their ages is 36.â€ â€œHmmm, the sum of their ages is the same as this figure right here,â€ says John pointing at the spreadsheet. â€œStill not enough information,â€ says Mary after thinking for a minute. â€œThe eldest is dyslexic,â€ says John. How old are the children?