Average of 11 results is 59

Average of 11 results is 59. If the average of first five results is 55 and average of last five results is 60 Then find the sixth result?

Its source gives only the correct option, without the working.

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #47964