Lemma
MediumRatio, proportion & variation
AQuA-RAT train #64213 · Algebra · Ratio, proportion & variation

Kamal is 60 years old and Karthi is 80 years old

Kamal is 60 years old and Karthi is 80 years old. How many years ago was the ratio of their ages 4 : 6?

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #64213

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