Are both sentence right?
The proper kanji for age is 歳. Originally, 才 only denotes one’s talent and does not carry a meaning of age. But the character 歳 is difficult to write, so the homonym 才 is used instead. Nowadays, 才 is considered a 略字 (りゃくじ) of 歳. With that said, 才 is now used in almost everywhere and 歳 is reserved for the more formal writings.