If 9 persons can do 9 times of a particular work in…

If 9 persons can do 9 times of a particular work in 9 days, then, 7 persons can do 7 times of that work in?

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 #9860