If the cost price of 30 pens is equal to the selling…

If the cost price of 30 pens is equal to the selling price of 25 pens, the 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 #51291