If the selling price of 60 articles is equal to the cost…

If the selling price of 60 articles is equal to the cost price of 30 articles, then the loss or gain percent 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 #2897