A cab driver 5days income was …50, …65 , $80

A cab driver 5days income was $40, $50, $60, $65 , $80. Then his average income is?

This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #6406