Ravi can do a piece of work in 30 days while Prakash…

Ravi can do a piece of work in 30 days while Prakash can do it in 40 days. In how many days will they finish it together?

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 #1721