If the cost price of 12 pens is equal to the selling…

If the cost price of 12 pens is equal to the selling price of 7 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.

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #1117

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