Lemma
MediumPermutations & combinations
AQuA-RAT train #85733 · Combinatorics · Permutations & combinations

The average age of 10 members of a committee is the same…

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #85733

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