A shopkeeper sold an article at $1170 and gained a 20% profit

A shopkeeper sold an article at $1170 and gained a 20% profit. What was the cost 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 #51559