Lemma
MediumAverages
AQuA-RAT train #21287 · Arithmetic · Averages

The average age of a class of 39 students is 15 years

The average age of a class of 39 students is 15 years. If the age of the teacher be included, then the average increases by 3 months .Find the age of the teacher.

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 #21287

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