A student got 72% in math and 82% in history

A student got 72% in math and 82% in history. To get an overall average of 75%, how much should the student get in the third subject?

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 #17401