Thomas is 6 years old. His older sister, Shay, is 13 years older than him and 5 years younger than their older brother, James. How old will James be by the time Thomas reaches his current age?
Shay is 6 + 13 = <T>add(6, 13)=19 years old.
James is 19 + 5 = <T>add(19, 5)=24 years old.
Thomas will be 24 in 24 - 6 = <T>subtract(24, 6)=18 years.
James will be 24 + 18 = <T>add(24, 18)=42 years old.
