An article is sold at a certain price

An article is sold at a certain price. By selling it at 2/3 of that price one loses 10%. Find the gain percent at original price?

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 #25913