Mahesh can do a piece of work in 40days

Mahesh can do a piece of work in 40days. He works at it for 20days and then Rajesh finished it in 30days. How long will Y take to complete the work?

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 #813