On Dik 's birthday, his brother Harry is seventeen years younger

than three times 's age. The boys father, Tom, is twelve years
older than twice Harry's age. If is seven years younger than
his brother, how many candles are on 's cake?

On Dik’s birthday, his brother Harry is seventeen years younger than three times Dik's age. The boys father, Tom, is twelve years older than twice Harry's age. If is seven years younger than his brother, how many candles are on Dik’s cake?