A grocer has a sales of Euro 520, Euro 628, Euro 525…

A grocer has a sales of Euro 520, Euro 628, Euro 525, Euro 600 and Euro 800 for 5 consecutive months. How much sale must he have in the sixth month so that he gets an average sale of Euro 700?

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 #38678