Lemma
MediumPermutations & combinations
AQuA-RAT train #83103 · Combinatorics · Permutations & combinations

A drum has a combination of 2 liquids X and Y in…

A drum has a combination of 2 liquids X and Y in the proportion 7:5 when 9 L of combination are taken out and the Drum is filled with Y, the proportion of X and Y becomes 7:9. Then how many litres of liquids X was obtained by the Drum initially?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #83103

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