The average of 3 consecutive odd numbers is 30

The average of 3 consecutive odd numbers is 30. What is the difference between the highest and lowest numbers?

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 #91596