Lemma
MediumAverages
AQuA-RAT train #3529 · Arithmetic · Averages

The average age of a group of 5 members is 20 years

The average age of a group of 5 members is 20 years. Two years later, a new member joins the group. The average age of the group becomes 21 years. What is the age of the new member ?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #3529

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