By selling an article at Rs.400, a profit of 60% is made

By selling an article at Rs.400, a profit of 60% is made. Find its 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 #46730