A certain number of workers can do a work in 65 days

A certain number of workers can do a work in 65 days. If there were 10 workers more it could be finished in 10 days less. How many workers are there?

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 #34556