Lemma
MediumRatio, proportion & variation
AQuA-RAT train #85911 · Algebra · Ratio, proportion & variation

The ratio of present ages of X and Y is 4:5

The ratio of present ages of X and Y is 4:5. Which of the following cant be the ratio of ages of X and Y, 20 years ago?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #85911

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