P can do a piece of work in 18 days and Q…

P can do a piece of work in 18 days and Q can do in 22 days, with the help of C, they finish the work in 6 days. How long will it take R to finish the work?

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #85222