Try to logically think through the ages of everyone in the present.
If Lisa will be 14 years old five years from now, then she is 9 years old now.
Lisa was 8 years old last year, which means Jamie was 16 years old last year. But if we look at the current year, that would make Jamie 17 years old.
Bob says he is 24 years old. But is he really? Does not look like he aged well.