Ravi can do a piece of work in 15 days while Prakash…

Ravi can do a piece of work in 15 days while Prakash can do it in 6 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 #37767