A man gains 20% by selling an article for a certain price

A man gains 20% by selling an article for a certain price. If the sells it at double the price, the percentage of profit will be:

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 #26114