Walking at 5/6th of its usual speed a cab is 8mnts late

Walking at 5/6th of its usual speed a cab is 8mnts late. Find its usual time to cover the journey?

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 #63905