The average of three numbers is 29

The average of three numbers is 29. The average of two of these numbers is 38. What is the third number?

This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #31661

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