Lemma
MediumRatio, proportion & variation
AQuA-RAT train #60137 · Algebra · Ratio, proportion & variation

The ratio of the present ages of a man and his wife…

The ratio of the present ages of a man and his wife is 4 : 3. Which of the following can't be a possible ratio of their ages 30 years ago?

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 #60137

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