Lemma
MediumRatio, proportion & variation
AQuA-RAT train #67152 · Algebra · Ratio, proportion & variation

The age of father 5 years ago was four times the age…

The age of father 5 years ago was four times the age of his son. Five years hence, father's age will be twice that of his son. The ratio of their present ages is:

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AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #67152

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