A ship sails out to a mark at the rate of 12…

A ship sails out to a mark at the rate of 12 kmph. and sails back at the rate of 8 kmph. The average rate of sailing is ?

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 #57878