Contradictions in the Qur'an : Old age of Jesus?

Qur'an Contradiction:

The ministry of Jesus lasted until he was about 33. This is even admitted by Yusuf Ali in his comment no. 388 on Sura 3:46.

But Sura 5:110 says he taught the people in (up to his) old age. Can 33 years considered "old age" by any stretch of imagination?